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How Terrorism Is Wrong: Morality and Political Violence

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Virginia Held, How Terrorism Is Wrong: Morality and Political Violence , Oxford University Press, 2008, 205pp., $45.00 (hbk), ISBN 9780195329599.

Reviewed by Igor Primoratz, University of Melbourne

This is a book on terrorism and political violence more generally, written by a philosopher and accordingly focusing on conceptual and moral, rather than empirical or historical, questions. The book is meant for fellow philosophers and political theorists, but it is written clearly and without philosophical jargon, and will be accessible, and of much interest, to the general reader too.

While political violence is a traditional topic in political and moral philosophy, terrorism -- the type of political violence generally considered most difficult to defend -- was not much discussed before the attacks in the US on 11 September 2001. Virginia Held is one of the few philosophers who gave it sustained attention before it became a fashionable topic. The present book is a collection of seven essays she has published over the last twenty-odd years and one previously unpublished paper. Some essays discuss terrorism or political violence generally, while others look into such related issues as the ways the media deals with political violence, or collective responsibility for ethnic hatred and violence. There is also an essay on the methods of moral inquiry.

In her approach to moral questions, Held combines consequentialism, deontological ethics and the ethics of care. The relevance of the last approach to discussing issues of political violence is rather limited, and Held's position on terrorism and political violence is grounded in consequentialist and deontological considerations of a more traditional type. So is just war theory, but Held's views are not a version of that theory. Indeed, she doubts that just war theory can be of much help in understanding and judging contemporary armed conflicts.

The title of the book might be thought somewhat misleading, as Held does not so much seek to show how terrorism is wrong as how it can be right. To be sure, a title highlighting the latter prospect probably would not have been a good idea in the current atmosphere of the "war on terror." This "war" is both driven and defended by a "moral clarity" claimed by leaders of some major powers and by many analysts and commentators. Held rightly challenges this facile "moral clarity," according to which all terrorism is morally the same, clearly distinct from war, and a monopoly of insurgents, who are both amoral and utterly irrational and fanatical, and therefore never to be engaged with in dialogue or negotiation. She goes on to argue that we should not adopt a sweeping moral rejection of all terrorism, whatever the cause it serves, the circumstances in which it does so, and the consequences of refraining from it; that terrorism is not "uniquely atrocious"; and that it is not necessarily morally worse than war.

The scope and import of any moral assessment of terrorism depends on just what is meant by "terrorism". Accordingly, Held discusses at some length the question of how the term should be defined. The usage over the two centuries or so since the term entered political and moral discourse in the West has been notoriously confusing, fraught with moral emotions and political passions, and plagued by relativism and double standards. It is in such cases that philosophy can demonstrate its relevance to public debates by clarifying central concepts and main positions, spotting missteps in argument, exposing prejudice and double standards, and thus facilitating more rational and discerning moral deliberation and choice. Most definitions of terrorism crafted by philosophers acknowledge the two traits that make up the core concept underlining all shifts in descriptive and evaluative meaning: terrorism is violence aiming at intimidation (fear, terror). Beyond this, philosophers tend to disagree, most importantly on whether terrorism is violence against civilians (non-combatants, innocent people), or can also target members of the military and security services and highly placed government officials. This is the question of a narrow vs. wide definition. A wide definition is in line with common use over two centuries, whereas a narrow definition is revisionary. Yet a narrow definition may be more appropriate in the context of moral assessment of violence and terrorism. Surely there is a considerable moral difference between planting a bomb in an office of (what is considered) an extremely oppressive government and killing a number of its officials, and planting a bomb in a coffee shop and killing a number of common citizens.

Held prefers a wide definition, for reasons I do not find convincing. One is common use. Held points out that the attack on the Marine barracks in Lebanon in 1983, or much Palestinian violence directed at Israeli soldiers, would not count as terrorism on a narrow definition, while the bombing of Dresden or Hiroshima would, and finds these implications unacceptable. To me, they seem just right. She quotes Walter Laqueur's remark that "most terrorist groups in the contemporary world have been attacking the military, the police, and the civilian population" (p. 55) as showing the inadequacy of a narrow definition. But surely the fact that a group has engaged in terrorism to an extent sufficient to consider it a terrorist group does not turn every act of political violence committed by the group into an act of terrorism. Finally, Held rejects narrow definitions on the ground that "it is not at all clear who the 'innocent' are as distinct from the 'legitimate' targets. We can perhaps agree that small children are innocent, but beyond this, there is little moral clarity" (pp. 19-20). Yet even if only "small children" were morally protected against violence that would be a weighty consideration, as indiscriminate political violence against civilians or common citizens is bound to kill and maim children too. Moreover, there are other classes of civilians that are just as clearly innocent in the relevant sense, i.e. innocent of the (alleged) injustice or oppression: opponents of the government, those too old or infirm to take part in political life, or those inculpably ignorant of the immorality of their government's policies.

The book offers two somewhat different definitions of terrorism: as "political violence that usually spreads fear beyond those attacked" and "perhaps more than anything else … resembles small-scale war" (p. 21), and as political violence employed with "the intention either to spread fear or to harm non-combatants" (p. 76). Both definitions run together war and terrorism, and imply that an act of war proper, i.e. one aimed at a legitimate military target, counts as terrorism. For, as Trotsky pointed out in his defense of the "red terror", "war … is founded upon intimidation… . [It] destroys only an insignificant part of the conquered army, intimidating the remainder and breaking their will" ( Terrorism and Communism , Ann Arbor: The University of Michigan Press, 1961, p. 58). Held accepts this implication of her position; I find it problematic.

Philosophers working with a wide definition of terrorism usually distinguish terrorism that targets the military and high government officials and terrorism that attacks common citizens, and argue that the former type of terrorism can be morally justified in certain circumstances, while the latter type is never, or almost never, justified. Held does not take this line. Her book offers two different justifications of terrorist violence, and both apply to the latter as well as the former kind of terrorism.

The first is in terms of the responsibility of citizens in a democracy for what their government does on their behalf. This justification is only suggested at several points in the book and is never developed and defended from likely objections. Held does not make it clear whether she sees common citizens as proper objects of terrorist violence because, as voters, they authorize the government's actions and policies (p. 20), or on account of various types and degrees of support they give the government (pp. 56, 78). Both these lines of argument are open to serious queries.

Held's second justification of terrorism, presented in chapter 4 )“Terrorism, Rights, and Political Goals”) is carefully spelled out. It focuses on the issue of human rights. When human rights of a person or group are not respected, what may we do in order to ensure that they are? On one view, known as consequentialism of rights, if the only way to ensure respect of a certain right of A and B is to infringe on the same right of C, we will be justified in doing so. Held does not accept such trade-offs in rights with the aim of maximizing their respect. But she points out that rights sometimes come into conflict, whether directly or indirectly. When that happens, we cannot avoid comparing the rights involved in terms of their stringency and making certain choices. That applies to the case of terrorism too. Terrorism violates some human rights of its victims. But its advocates claim that in certain circumstances a limited use of terrorism is the only way of bringing about a society in which the human rights of all will be respected.

Even when that is so, it is not enough to make resort to terrorism justified. But it will be justified if an additional condition is met: that of distributive justice. If there is a society where the human rights of a part of the population are respected, while the same rights of another part of the population are being violated, and if the only way of putting an end to that and bringing about a society in which human rights of all are respected is a limited use of terrorism, and finally, if terrorism is directed against members of the first group, which until now has been privileged as far as respect of human rights is concerned -- then terrorism will be morally justified. This is an argument of distributive justice, brought to bear on the problem of violations of human rights. It is more just to equalize the violations of human rights in a stage of transition to a society where the rights of all are respected, than to allow the group which has already suffered large-scale violations of human rights to suffer more such violations (assuming that in both cases we are dealing with violations of the same, or equally stringent, human rights). Human rights of many are going to be violated in any case. "If we must have rights violations, a more equitable distribution of such violations is better than a less equitable one" (p. 88).

This is an original, deontological cum consequentialist justification of terrorism. Neither the indispensable contribution of terrorism to bringing about equal respect of human rights of all nor the justice in the distribution of violations of such rights in the transition stage is, in itself, enough to justify its use. Each is necessary, and jointly the two are sufficient for its justification. Obviously, a critique that reduces Held's position to either of its prongs falls short of the mark. So does the objection that terrorism is as a matter of fact highly unlikely ever to help usher in a better, more just society. If so, that tells against terrorism, rather than against Held's (or any other) stringent moral requirements for a morally defensible recourse to it.

Another objection is that in allowing for sacrificing such basic human rights as the right to life and to bodily security of individual victims of terrorism for the sake of a more just distribution of violations of the same rights within a group in the course of transition to a stage where these rights will be respected throughout that group, Held adopts a collectivistic position that offends against the principles of separateness of persons and respect for persons. In response, Held argues that

to fail to achieve a more just distribution of violations of rights (through the use of terrorism if that is the only means available) is to fail to recognize that those whose rights are already not fairly respected are individuals in their own right, not merely members of a group … whose rights can be ignored. … Arguments for achieving a just distribution of rights violations need not be arguments … that are more than incidentally about groups. They can be arguments about individuals' rights to basic fairness. (pp. 89-90)

Still, a common citizen belonging to the relatively privileged section of the population has done nothing to forfeit her right to life. If she is killed by a terrorist seeking to make the distribution of right to life violations in the entire population more just, her right to life is violated for reasons to do with the group: for the sake of more justice within the group. This has nothing to do with her sins of commission or omission, and in this sense Held's is a collectivistic argument -- and an argument that I, for one, do not find convincing. Held argues that, if we fail to resort to terrorism in the circumstances described in her argument, we thereby fail to recognize that individuals belonging to the disadvantaged section of the population "are individuals in their own right," rather than merely members of a group whose human rights can be ignored. This argument is predicated on moral equivalence of acts and omissions, and on ascription of negative responsibility. This, too, I find problematic. We do not fail to respect the right to life of disadvantaged individuals when we fail to kill or maim other individuals, personally innocent of the plight of the former. The disadvantaged individuals do not have a right that we should engage in terrorism in their behalf, and we do not have a duty to do that. Indeed, I believe we have a duty not to do that.

Whether Held's two-prong justification of terrorism can be successfully defended against this and other possible objections or not, it remains an original, complex, and highly important position on the morality of terrorism. The essay presenting it is the centerpiece of Held's book and her most valuable contribution to the discussion of terrorism as far as fellow philosophers are concerned. The general reader will find much of interest in all the essays in this book. In the wider context of public debate about terrorism and the "war" against it, Held provides a strong antidote to the simplistic deliverances of "moral clarity" many of our political leaders and "public intellectuals" claim to possess.

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Issue Cover

Article Contents

1. introduction, 2. on terrorism, 3. event data sets, 4. domestic and transnational terrorism: some data plots, 5. counterterrorism, 6. findings of the articles of the special issue, 7. concluding remarks, acknowledgements, terrorism and counterterrorism: an overview.

  • Article contents
  • Figures & tables
  • Supplementary Data

Todd Sandler, Terrorism and counterterrorism: an overview, Oxford Economic Papers , Volume 67, Issue 1, January 2015, Pages 1–20, https://doi.org/10.1093/oep/gpu039

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This introduction sets the stage for the articles collected in this special issue of Oxford Economic Papers . It begins by introducing essential concepts including domestic terrorism, transnational terrorism, defensive actions, proactive countermeasures, and guerrilla warfare. Three terrorist event databases, used by seven of the articles, are briefly introduced. These data sets are then used to display some stylized facts about domestic and transnational terrorism during the past four decades. Next, some essential strategic distinctions are drawn between defensive and proactive measures in the case of transnational terrorism when multiple countries are confronted by a common terrorist group. These strategic concerns vanish for domestic terrorism as a central government is able to internalize potential externalities. Finally, the key findings of the articles in the special issue are highlighted in two tables.

Terrorism is the premeditated use or threat to use violence by individuals or subnational groups to obtain a political or social objective through the intimidation of a large audience beyond that of the immediate noncombatant victims ( Enders and Sandler, 2012 , p.4). The two essential ingredients of terrorism are its violence and its political or social motive. Terrorists tend to employ shockingly violent acts, such as beheadings, downing of commercial airlines, bombings in public markets, and armed attacks in public places, to intimidate an audience. Their unpredictable and horrific attacks are meant to make everyone feel at risk even though the true likelihood of falling victim to a terrorist incident is rather minuscule, roughly equivalent to that of drowning in one's bathtub ( Mueller, 2006 ). Terrorists seek to circumvent normal channels for political change by traumatizing the public with brutal acts so that governments feel compelled to either address terrorist demands or divert public funds into hardening potential targets. Terrorist campaigns are more prevalent in liberal democracies, where the government's legitimacy hinges on its ability to protect the lives and property of its citizens ( Eubank and Weinberg, 1994 ).

The four airplane hijackings on 11 September 2001 (9/11) are terrorist acts since the perpetrators were members of al-Qaida, a subnational terrorist group, bent on pressuring the USA to remove its troops from Saudi Arabia, which was al-Qaida's primary political goal at the time. These skyjackings intimidated a global audience, caused huge temporary losses to the major stock exchanges ( Chen and Siems, 2004 ), and created $80–90 billion in direct and indirect damages ( Kunreuther et al ., 2003 ). Even though stock exchanges recovered lost values in just over a month, the death of almost 3,000 people caused rich industrial countries to allocate more resources to counterterrorism, shook insurance markets, and made an indelible impression on virtually the entire world. Heinous terrorist incidents continue to capture headlines with recent newsworthy incidents involving al-Shabaab's armed attack on the Westgate Mall in Nairobi, Kenya, on 21 September 2013; Chechen separatists’ suicide bombings of a train station and a trolley in Volgograd, Russia, on 29 and 30 December 2013, respectively; and Boko Haram's kidnapping of more than 200 female students in Chibok, Nigeria, on 14–15 April 2014. These and countless other incidents since 9/11 indicate that the government must allocate resources in an effective and measured manner to counterterrorism activities so that terrorists cannot circumvent legitimate political processes or cause significant economic losses. These losses may involve reduced foreign direct investment ( Enders and Sandler, 1996 ; Abadie and Gardeazabal, 2008 ), lower economic growth ( Abadie and Gardeazabal, 2003 ; Eckstein and Tsiddon, 2004 ; Gaibulloev and Sandler, 2008 , 2011 ), less trade ( Nitsch and Schumacher, 2004 ), reduced tourism ( Enders et al ., 1992 ; Drakos and Kutan, 2003 ), or lost values of stock and bond indexes ( Kollias et al ., 2013 ). Economic impacts of terrorism are greatest in small terrorism-plagued countries and developing countries ( Keefer and Loayza, 2008 ; Sandler and Enders, 2008 ). Modern industrial economies can insulate themselves through judicious fiscal and monetary policy, rapid counterterrorism responses, and the transference of economic activities ( Enders and Sandler, 2012 ). The latter involves economic activities moving from terrorism-prone sectors and regions to safer areas, which advanced, diversified economies allow. Thus, economic activity may switch from the tourism sector to other sectors when the former is targeted. In Spain, economic investment switched from the Basque Country to other Spanish provinces because of Euskadi ta Askatasuna attacks ( Abadie and Gardeazabal, 2003 ).

Modern-day econometric methods—time series, panel, and discrete-choice models—lend themselves to the quantification of these economic losses as shown in this special issue by Choi (2015) , Egger and Gassebner (2015) , and Younas (2015) . Additionally, game-theoretic models can display counterterrorism interactions among terrorists and governments as in the contributions in this issue by Carter (2015) and Kaplan (2015) . In fact, game theory is an excellent tool to study interactions among targeted governments, between rival terrorist groups, between a terrorist group and its sponsoring state, and among the media, the terrorist group, and the public. 1

The purpose of this article is to provide the requisite background to the studies in this special issue of Oxford Economic Papers . This task requires a fuller discussion of the notion of terrorism and its two primary subdivisions—domestic and transnational terrorism—in Section 2. The three event data sets employed in empirical studies, including seven of the eight articles in this issue, are briefly presented in Section 3. In Section 4, two of these data sets are used to display some recent trends and aspects of domestic and transnational terrorism during the last four decades. Essential concepts of counterterrorism are then presented in Section 5, where proactive measures are distinguished from defensive actions. Key findings of the four terrorism and four counterterrorism articles contained in this special issue are highlighted in two summarizing tables in Section 6. Concluding remarks follow in Section 7.

I now return to the definition of terrorism, given at the outset of this article. Any definition of terrorism involves much debate ( Hoffman, 2006 ; Enders and Sandler, 2012 ). The research community is converging to a consensus based on an operational definition on which to construct event data sets to test theoretical propositions. The article puts forward a definition that is consistent with that used by the main event data sets and relied on by researchers. Also, this definition possesses the main ingredients that are agreed on by economists, political scientists, and political economists.

The three stakeholders in this definition are the perpetrators, the victims, and the audience. By limiting terrorism to subnational agents including individuals or a ‘lone wolf’, my definition rules out state terror in which a government terrorizes its own people. The definition, however, does not rule out state-sponsored terrorism where a government clandestinely assists a terrorist group through various means, including supplying weapons, safe haven, intelligence, training, funding, or safe passage ( Mickolus, 1989 ; Bapat, 2006 ). There was a lot of state sponsorship of terrorism during the final decade of the Cold War with groups such as the Abu Nidal Organization serving as a terrorist group for hire ( Hoffman, 2006 ). 2 The most controversial element of my definition is the victim, since some definitions exclude combatants, so that attacks against an occupying army, such as US forces in Iraq or Afghanistan, are not viewed as terrorism. Generally, an attack against peacekeepers, such as the 23 October 1983 suicide bombing of the US Marines barracks at Beirut International Airport, is considered an act of terrorism. The barracks’ bombing had the political objective of removing peacekeepers from Lebanon, which happened in February 1984. Attacks against US soldiers and their dependents stationed in Germany constitute terrorist incidents, because these targeted individuals were noncombatants when attacked. ‘Audience’ refers to the collective that terrorists seek to intimidate through their wanton brutality. With sufficient and sustained intimidation, the audience will apply pressures on the besieged government to concede to the terrorist group's political demands or alternatively to take decisive action to annihilate the group. 3 In the latter case, the Italian authorities dismantled the Italian Red Brigades in the 1980s.

There are some crucial distinctions to draw between terrorism and related concepts. For instance, there is the distinction between terrorism and crime. A kidnapping for ransom is a criminal act of extortion when the kidnappers are not pursuing or financing a political agenda. If a political motive is tied to the kidnapping, then it is a terrorist incident even with ransom demands being made. The hijacking of a commercial airliner by a deranged person is a crime but not terrorism. In the absence of a political motive, an armed attack by a student on fellow students or teachers is a criminal action. Next consider an insurrection, which ‘is a politically based uprising intended to overthrow the established system of governance and to bring about a redistribution of income’ ( Sandler and Hartley, 1995 , p. 307). Leaders of insurrections recruit from the peasantry and general population in the hopes of challenging the government's hold on power ( Grossman, 1991 ). Successful rebel operations can generate new recruits and may ideally cause the government to impose draconian measures on its citizens, which subsequently create more support for the insurgency. If a tipping point is attained, then the government may be sufficiently challenged to lose its power to the rebels.

In distinction to insurrections, guerrilla warfare generally involves a band of rebel forces (e.g., the Revolutionary Armed Forces of Colombia [FARC], Abu Sayyaf in the Philippines, or Shining Path in Peru) that controls a sector of the country, from which to dispatch its operatives to confront government forces. Some guerrilla wars take place in urban centers. In contrast to most terrorist groups, guerrilla groups are larger in number and organized like a military force. Some guerrilla groups engage in terrorist acts, such as the three just-mentioned groups, to raise funds to secure their operations and pursue their political aims. For example, FARC kidnaps government officials and others for ransoms. Unlike an insurrection, guerrilla groups are not bent on overthrowing the government or engaging in propaganda to gain popular support ( Hoffman, 2006 ). Shining Path and FARC apply threats and harsh measures to gain the compliance of the people in the territory that they control. Guerrilla groups rely on surprise and cover to harass numerically superior government forces. Terrorism is a tactic employed by both insurrections and guerrilla movements. As a consequence, many guerrilla groups are listed as terrorist groups despite their control of territory. Often, countries with jungle cover or mountainous terrain provide remote areas where guerrillas can conduct training and operations. In this special issue, Carter (2015) is interested in the interaction between a guerrilla group and the government, as the former chooses between terrorism and the control of territory and the latter chooses between defensive counterterrorism actions and proactive military responses to influence the group's decision.

2.1 Domestic versus transnational terrorism

Domestic terrorism is homegrown and home-directed, and represents the most common form of terrorism. For domestic acts of terrorism, the perpetrators, victims, and audience hail from the venue country, where the attack takes place. Domestic terrorist incidents include Timothy McVeigh's bombing of the Alfred P. Murrah Federal Building in Oklahoma City on 19 April 1995 or Eric Rudolph's anti-abortionist bombing of Centennial Olympic Park in Atlanta, Georgia, on 27 July 1996. Civil wars often involve numerous domestic terrorist attacks before and during the conflict by the adversaries ( Findley and Young, 2012 ). 4 These terrorist acts are more apt to be domestic when an intervention by a third party from outside the country is not involved. Boko Haram's kidnapping of more than 200 female students is a domestic terrorist incident, which involves victims and perpetrators from the venue country of Nigeria. Boko Haram is an Islamic jihadist terrorist group that controls territory in the northeast portion of Nigeria. Given the country's limited military capabilities, its government sought some assistance from the USA in terms of military advisors and intelligence in addressing the significant threat that Boko Haram poses. At times, Boko Haram crosses into Chad. If one or more of the schoolgirls are moved into a neighboring country, then the kidnapping becomes a transnational terrorist incident. In general, poor countries may request foreign assistance if they cannot properly confront an indigenous terrorist group that may attack at home or abroad ( Azam and Thelen, 2010 ; Fleck and Kilby, 2010 ; Bandyopadhyay et al ., 2011 , 2014 ; Young and Findley, 2011 ).

Terrorism is transnational when an incident in the venue country concerns perpetrators or victims from another country. If a terrorist attack in the UK is perpetrated by terrorists from Yemen, then the incident is one of transnational terrorism. When a terrorist attack in France harms Dutch citizens, the attack is transnational. If one or more victims or perpetrators are not citizens of the venue country, then the terrorist attack is transnational. The kidnapping in January 2002 and subsequent murder of US reporter Daniel Pearl in Pakistan is classified as a transnational terrorist incident. The same is true of the near-simultaneous bombings of the US embassies in Kenya and Tanzania on 7 August 1998. Terrorist attacks against another country's embassy, even when perpetrated by citizens of the venue country, are transnational terrorist events because an embassy's grounds represent foreign soil. Similarly, terrorist attacks against international organizations’ personnel or property are considered to be transnational terrorist acts. An important transnational terrorist incident is the August 2006 plot to use liquid explosives to blow up 10 or more transatlantic flights departing the UK for the USA and Canada. A skyjacking originating in one country that is diverted to another country for political purposes is a transnational terrorist event. If a politically motivated hijacked plane has citizens from more than one country, the event is transnational terrorism even if the flight is domestic and ends in the country of origin. On 9/11, the four skyjackings are transnational terrorist acts since the victims were citizens from upward of 80 nations and the perpetrators were foreigners. The kidnapping of US journalist James Foley in Syria on 22 November 2012 and his beheading on 19 August 2014 is a transnational terrorist act. The victim was American, whereas the murderer is allegedly a British citizen from the Islamic State in Iraq and Syria (ISIS), also known as Islamic State (IS).

Transnational terrorist incidents frequently imply transnational externalities—for example, perpetrators from one country impose uncompensated costs on the victims of another country. If a country provides safe haven to a transnational terrorist group that attacks other countries’ interests, then transnational externalities ensue. 5 The Taliban in Afghanistan had given safe haven to Osama bin Laden's al-Qaida, which planned and executed the events of 9/11. When the Taliban would not surrender bin Laden to the USA following 9/11, the USA led an invasion of Afghanistan on 7 October 2001 ( Enders and Sandler, 2012 ). In this extreme case, the transnational externality resulted in a military invasion with the intent to defeat the Taliban and al-Qaida. Transnational externalities also arise from counterterrorism policies of targeted countries, which result in inefficient levels of these policies ( Sandler and Lapan, 1988 ; Sandler and Siqueira, 2006 ; Bueno de Mesquita, 2007 ). Actions by one targeted country to secure its borders and ports of entry may merely transfer the attack abroad, where borders are more porous (see Section 5). Since 9/11, few transnational terrorist incidents occur on US soil but 35% to 40% of such incidents involve US people or property in other countries ( Enders and Sandler, 2006 , 2012 ).

2.2 Some historical considerations of transnational terrorism

Hoffman ( 2006 , pp.63–5) traces the modern era of transnational terrorism to the 22 July 1968 hijacking of an Israeli El Al flight en route from Rome to Athens by three armed members of the Popular Front for the Liberation of Palestine (PFLP) terrorist group. This skyjacking was motivated by the intention of the PFLP terrorist to trade its hostages for Palestinian prisoners held by Israel. This event is noteworthy for a number of reasons. First, through its protracted 40-day negotiations, the Israelis were forced to negotiate with the Palestinian terrorists, which the Israelis had hitherto vowed they would never do ( Hoffman, 1998 , p.68). Second, the media coverage demonstrated to terrorists worldwide that such incidents could garner worldwide attention for their cause. Not surprisingly, transnational terrorist attacks increased greatly in numbers during the years following this incident (see the figures in Section 4). Third, there was evidence of state sponsorship after the diverted plane landed in Algiers as Algerian forces secured the hostages and held some Israeli hostages until 1 September 1968 when a deal was concluded ( Mickolus, 1980 , pp.93–4). Fourth, Israel eventually traded 16 Arab prisoners from the 1967 Arab-Israeli War for the remaining Israeli hostages. This trade showed terrorists that hostage taking could yield significant concessions.

Transnational terrorist groups were primarily nationalists/separatists or leftists (socialists) during the late 1960s until the late 1980s ( Rapoport, 2004 ). Even the Palestinian terrorists were secular until the end of the 1980s with the rise of Hamas, Palestinian Islamic Jihad, and other groups. After the mid-1990s, the religious fundamentalists came to dominate and increased the carnage ( Enders and Sandler, 2000 ; Gaibulloev and Sandler, 2014 ). The phenomenon of religious-based transnational terrorism is not novel and can be traced back to the Sicarii or Zealots, a Jewish sect that conducted a terror campaign against the Romans and their Jewish collaborators in Judea from CE 48 to 73 ( Rapoport, 1984 ; Bloom, 2005 ). Sicarii terrorists engaged in daytime assassinations in public places that typically resulted in the death of the assassin. As such, their dagger attacks were an early form of suicide terrorism, since the perpetrator had little chance of escape. 6 From 1090 to 1256, the Islamic Assassins opposed Sunni rule in Persia and Syria, with the intent to set up their own community and state of believers in the region ( Bloom, 2005 ). Although the Assassins’ terrorist campaign was on a much smaller scale, their goal was similar to that of ISIS. Like the Sicarii, the Assassins relied on politically motivated assassinations, performed with a dagger. Perpetrators usually sacrificed their own lives by making no efforts to escape after the deed.

In the beginning of the 1980s, the first terrorist event data set—International Terrorism: Attributes of Terrorist Events (ITERATE)—was made available to researchers. ITERATE only includes transnational terrorist attacks. Coverage starts in 1968, the beginning of the modern era of transnational terrorism, and runs until the end of 2012, with annual updates in August ( Mickolus et al ., 2013 ). ITERATE codes many variables—for example, incident date, country start location, country end location, attack type, target entity, terrorist group, perpetrators’ nationalities, number of deaths, number of injuries, victims’ nationalities, logistical outcome, US victims, state sponsorship, and scene of attack—in its Common File of over 40 variables. In addition, there is a Fate File indicating the fate of the terrorists—for example, the number of terrorists captured, the number of terrorists sentenced, and their length of incarceration. There is also a Hostage File, which has invaluable observations used by researchers to analyze logistical and negotiation success of hostage taking ( Santifort and Sandler, 2013 ). If an attack is completed as planned, then it is a logistical success. For hostage missions, securing one or more hostages is deemed a logistical success. The Hostage File of ITERATE is currently updated through 2010. Finally, there is a Skyjacking file with additional observations, and variables on skyjacking missions such as the duration of the incidents, airline involved, and negotiation strategies used. ITERATE, like the other event data sets, relies on the news media—print, broadcast, and digital—for the observations of its variables.

An initial focus of empirical studies was on transnational terrorism because ITERATE was the most extensive data set available throughout the 1980s and 1990s. Its lengthy series of daily data were ideal for time-series studies, which dominated the research landscape except for a few survival studies, the first being Atkinson et al .'s (1987) study of the duration of hostage-taking incidents. Today, panel studies are prevalent including those in this special issue— Berrebi and Ostwald (2015) , Choi (2015) , Egger and Gassebner (2015) , Gries et al . (2015) , and Younas (2015) .

Another competing event data set, modeled after ITERATE, is the RAND (2012) data set, which currently codes incidents for 1968–2009 and is not being updated. Gaibulloev (2015) uses the RAND event data in conjunction with Jones and Libicki's (2008) classification of terrorist groups’ ideologies in his study of groups’ location decisions. For 1968–97, RAND event data only include transnational terrorist attacks; after 1998, RAND data distinguish between transnational and domestic terrorist attacks in a manner consistent with my early definitions. Compared to ITERATE, RAND data code fewer variables and, for transnational terrorist incidents, have more limited coverage than ITERATE as demonstrated by Enders (2007) .

The third event data set, germane to this special issue, is that of the Global Terrorism Database (GTD), which records both domestic and transnational terrorist incidents ( La Free and Dugan, 2007 ; National Consortium for the Study of Terrorism and Response to Terrorism, 2013 ). Although GTD recorded both kinds of incidents, until 2013 it did not distinguish between the two kinds of incidents. Enders et al . (2011) devised a five-step procedure for distinguishing between domestic and transnational terrorist incidents in GTD for 1970–2007 and made their breakdown available to researchers. This division is now applied to 2008–2012 (see Enders et al ., 2014 ). A breakdown of terrorism into its two components is essential because the two types of terrorism may affect economic variables and counterterrorism differently—for example, economic growth or foreign direct investment is more influenced by transnational terrorism ( Gaibulloev and Sandler, 2008 ). Moreover, the influence of other variables on domestic and transnational terrorism may differ ( Sandler, 2014 ; Choi, 2015 ). The Enders et al . (2011) procedure does a much better job in distinguishing between the two types of events than recent GTD efforts, based on the authors’ method without attribution. GTD has tens of thousands of unclassified incidents compared to Enders et al . (2011) .

There are some things to note about GTD. First, it has changed its coding conventions a few times, most recently for the 2012 data. Coding was also changed after the National Consortium for the Study of Terrorism and Responses to Terrorism (2013) , based at the University of Maryland, took charge of the data around 2005. As shown by Enders et al . (2011) , there are periods of undercounting and overcounting of incidents, which can be addressed by these authors’ calibration methods. Second, GTD data for 1993 are very incomplete because in an office move by Pinkerton, which originated the database, the box containing 1993 fell off of the truck! Third, perpetrators’ nationalities are not identified. Fourth, GTD does not contain any hostage negotiation variables, making the study of hostage-taking incidents impossible with this database. Fifth, GTD coverage of some kinds of domestic incidents, such as kidnappings, is virtually nonexistent prior to the late 1990s ( Enders et al ., 2011 ).

Key aspects of the articles for the special issue

Notes: *denotes that Enders et al . (2011) breakdown of GTD into domestic and transnational terrorist incidents was used. ITERATE = International Terrorism: Attributes of Terrorist Events; GTD = Global Terrorism Database.

A variety of empirical techniques are applied by the six empirical articles. In his cross-sectional study of the location choice of terrorist groups, Gaibulloev (2015) relies on a conditional logit estimator. To account for the count nature of the dependent terrorism variable, Choi (2015) and Gries et al . (2015) apply a negative binomial panel estimator. Endogeneity between the dependent variable and one or more independent variables is addressed in various ways: the Berrebi and Ostwald (2015) article employs instrumental variables (IV), consisting of lagged domestic terrorist attacks in neighboring countries, whereas the Younas (2015) article uses system generalized method of moments (SGMM) to augment his feasible generalized least squares (FGLS) estimates. The Gries et al . (2015) article addresses endogeneity with lagged values of the independent variables and also SGMM estimates. The Choi (2015) article primarily uses lagged independent variables to partly handle the endogeneity concern.

ITERATE transnational terrorist incidents and total casualties per year, 1968–2012

ITERATE transnational terrorist incidents and total casualties per year, 1968–2012

GTD terrorist incidents per year, 1970–2012

GTD terrorist incidents per year, 1970–2012

ITERATE attacks against US interests per year, 1968–2012

ITERATE attacks against US interests per year, 1968–2012

Annual number of casualties per attack

Annual number of casualties per attack

This special issue contains articles on terrorism and counterterrorism. Given my discussion of terrorism and its concepts, it is now instructive to introduce some basic concepts and concerns that are associated with the practice of counterterrorism.

Quite simply, counterterrorism corresponds to actions to ameliorate the threat and consequences of terrorism. These actions can be taken by governments, military alliances, international organizations (e.g., INTERPOL), private corporations, or private citizens. Counterterrorism comes in two basic varieties: defensive and proactive measures.

Defensive countermeasures protect potential targets by making attacks more costly for terrorists or reducing their likelihood of success. When, however, successful terrorist attacks ensue, defensive actions also serve to limit the resulting losses to the target. Defensive measures have generally been reactive, instituted after some successful or innovative terrorist attacks. In the USA, airline passengers are now required to remove their shoes when being screened, following the innovative, but fortunately unsuccessful, attempt by Richard Reid to bring down American Airlines flight 63 en route from Paris to Miami on 22 December 2001 with explosives hidden in his shoes. Before the installation of metal detectors to screen passengers at US airports on 5 January 1973, there were on average over 25 skyjackings each year in the USA ( Enders et al ., 1990 ). After their installation, attempted US skyjackings dropped to fewer than four a year. The success of these metal detectors in US airports led to their installation worldwide over the next six months. Following the downing of Pan Am flight 103 over Lockerbie, Scotland, on 21 December 1988 and the downing of UTA flight 772 over Niger on 19 September 1989, bomb-detecting devices were used to screen checked luggage. Defensive or protective counterterror actions may involve more than technological barriers. Other instances of defensive measures include target hardening, such as defensive perimeters around government buildings or embassies, or guards at key points of a country's infrastructure. Defensive measures can also take the form of issuing terrorism alerts, enacting stiffer penalties for terrorism offenses, enhancing first-responder capabilities, and stockpiling antibiotics and antidotes for biological and chemical terrorist attacks. This list of defensive actions is by no means exhaustive.

By contrast, proactive measures are offensive as a targeted government directly confronts the terrorist group or its supporters. Proactive measures may destroy terrorists’ resources (e.g., training camps), curb their finances, eliminate their safe havens, or kill and capture their members. In recent years, the Obama administration has relied on drone attacks to assassinate terrorist leaders and operatives. Proactive operations may assume myriad other forms, including a retaliatory raid against a state sponsor that provides resources, training, sanctuary, logistical support, or intelligence to a terrorist group. On 15 April 1986, the USA launched a retaliatory bombing raid on targets in Libya for its alleged support in the terrorist bombing of the La Belle discotheque in West Berlin on 4 April 1986, where 3 died and 231 were wounded, including 62 Americans ( Mickolus et al ., 1989 , vol. 2, pp.365–7). Another proactive measure takes the form of a preemptive attack against a terrorist group or a harboring country, such as the US-led invasion of Afghanistan four weeks after 9/11. A preemptive strike differs from a retaliatory raid because the former is more sustained and meant to severely compromise the capabilities of the terrorists to conduct future missions. Such strikes or raids concern transnational terrorism where a targeted country confronts the foreign threat. Other proactive measures include infiltrating terrorist groups, engaging in military action, conducting propaganda campaigns against the terrorists, and gathering intelligence to foil terror plots ( Kaplan, 2015 ). ‘Military action’ generally refers to operations by the host government against a resident terrorist group as in Carter (2015) . Actions that improve the economy, which in turn reduces grievances, can also be proactive ( Choi, 2015 ). Younas (2015) demonstrates empirically that increased globalization of a country's economy may also be proactive by limiting harmful and therefore grievance-causing effects of terrorism on economic growth. In this special issue, the four counterterrorism articles primary address aspects of proactive measures. Only Carter (2015) considers both defensive and proactive counterterrorism responses.

The game-theoretic literature on counterterrorism draws some fascinating strategic contrasts between defensive and proactive countermeasures. Suppose that two or more countries are confronted by the same Islamic jihadist terrorist group—for example, al-Qaida in the Arabian Peninsula (AQAP). In this transnational terrorism scenario, each at-risk country is inclined to work at cross-purposes by engaging in a defensive race in the hopes of transferring the terrorist attacks to other targeted countries ( Sandler and Lapan, 1988 ; Arce and Sandler, 2005 ). In the process, the countries engage in too much defense since the negative transference externality is not internalized. The only check on this adverse ‘defense race’ stems from the countries having large interests abroad, which may be hit when attacks are transferred abroad—recall Fig. 3 and attacks against US interests ( Bandyopadhyay and Sandler, 2011 ; Bandyopadhyay et al ., 2011 ).

Next consider proactive measures in these multicountry scenarios. Any country's actions to confront the common terrorist threat confer purely public (nonrival and nonexcludable) benefits to all potential target countries. As a result, there is too little proactive response as each country tries to free ride on the actions of other countries. Thus, defensive measures are strategic complements as one country's actions encourage those of other countries (i.e., reaction paths are upward-sloping), whereas proactive measures are strategic substitutes as one country's actions inhibit those of other countries (i.e., reaction paths are downward-sloping) ( Eaton, 2004 ; Sandler and Siqueira, 2006 ). Moreover, leadership can be shown to curb the defensive race, whereas leadership exacerbates the free-riding underprovision of offensive measures ( Sandler and Siqueira, 2006 ). Thus, there is no simple fix for these concerns among sovereign targeted nations.

For domestic terrorism, countries possess the proper incentives to choose defensive and proactive measures judiciously, because all associated costs and benefits are internalized ( Enders and Sandler, 2012 ). Thus, Kaplan's (2015) finding that the USA staffs about the right number of intelligence analysts to intercept terror plots is consistent with past game-theoretic findings regarding domestic counterterrorism optimality. Carter's (2015) article is also geared to domestic terrorism, whereas Choi (2015) and Younas (2015) may involve economic-based countermeasures for either type of terrorism.

Key findings of terrorism studies

Key findings of counterterrorism studies

This special issue contains many noteworthy advances in the study of terrorism. Gaibulloev (2015) is the first article to address terrorist groups’ base location choice; currently, the study of terrorist group survival is an active area of research. Berrebi and Ostwald (2015) is the initial study to examine the impact of terrorism on fertility. Younas (2015) and Choi (2015) refine the relationship between terrorism and growth; Egger and Gassebner (2015) show that terrorism has less of an effect on trade than conventionally believed. Kaplan (2015) investigates the social efficiency of intelligence staffing in intercepting terror plots. Carter's (2015) analysis is novel because the terrorist group must decide between terrorist attacks and holding territory in reaction to the government's countermeasures. The interface between terrorism and other forms of political violence is seldom studied. Finally, the Gries et al . (2015) study extends knowledge of the determinants of anti-American terrorist attacks, which comprise 35–40% of all transnational terrorism.

Terrorism remains an active research area in economics, political economy, and political science. Given the microeconomic and macroeconomic consequences of terrorism, its study is a fitting topic for a general economics journal such as Oxford Economic Papers . Following 9/11, industrial countries engaged in a huge reallocation of resources toward counterterrorism, whose efficacy can be best studied and understood with the theoretical and empirical tools drawn from economics.

The rise of ISIS and the considerable threat that its Western fighters pose for their home countries means that terrorism will remain a policy concern. AQAP's war on the USA and its allies is yet another terrorist threat. Just as Africa appears to be achieving sustained economic growth in select countries, significant terrorist challenges arise from Boko Haram and al-Shabaab in Nigeria and Kenya, respectively. Failed states—for example, Afghanistan, Iraq, Somalia, Syria, and Yemen—supply safe havens for terrorist groups that threaten Western interests. It is my hope that this special issue on terrorism and counterterrorism will stimulate further research in these two topics.

The present collection arises from a set of papers presented at the sixth conference on Terrorism and Counterterrorism Policy at the University of Texas, Dallas. Held between 21 May and 24 May 2014, this conference invited many leading contributors to the study of terrorism and counterterrorism. Past conferences resulted in special issues published in Economics &Politics (November 2009), Journal of Conflict Resolution (April 2010), Journal of Peace Research (May 2011), Public Choice (December 2011), and Southern Economic Journal (April 2013). While assuming full responsibility for any remaining shortcomings, this article has profited from comments from Anindya Banerjee, who also advised me on the special issue. Khusrav Gaibulloev read and commented on an earlier version. Finally, I thank all of this special issue's reviewers, most of whom are major contributors to the study of terrorism. These reviewers provided rigorous reviews in a timely fashion. All articles went through a careful and demanding prescreening process, followed by two rounds of reviews by two to three anonymous referees. I appreciate the understanding of those authors whose papers did not make it into the special issue.

On the game-theoretic literature on terrorism, see Bandyopadhyay and Sandler (2011) , Bandyopadhyay et al . ( 2011 , 2014 ), Sandler and Arce (2003) , Bueno de Mesquita (2005) , and Sandler and Siqueira (2009) .

The Abu Nidal Organization was headed by Sabri Khali al-Banna. Its notorious attacks included the simultaneous armed attacks on the Rome and Vienna airports on 27 December 1985, the armed attack on the Neve Shalom Synagogue in Istanbul on 6 September 1986, and the attempted hijacking of Pan Am flight 73 in Karachi, Pakistan, on 5 September 1986 ( Enders and Sandler, 2012 ). This group is credited with the first simultaneous terrorist attacks.

On alternative ways that terrorist groups end, see Carter (2012) , Gailbulloev and Sandler (2014) , and Phillips (2014a) .

On the relationship between civil wars and terrorism, see Sambanis (2008) .

How terrorist groups choose their home base is discussed in this special issue by Gaibulloev (2015) . On the definition of terrorist groups, see Phillips (2014b) .

In this special issue, Choi (2015) investigates suicide terrorism, which may be domestic or transnational in nature. Suicide terrorist attacks grew in numbers after 1988 ( Santifort-Jordan and Sandler, 2014 ).

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International Terrorism: The Challenge to Global Security Essay

Introduction, international terrorism as a global challenge, discussion and conclusion.

The damaging effect of terrorism on modern society was brought to the world’s attention following the terrorist attacks in New York and Washington in September 2001. This acts by the Al-Qaeda terror network demonstrated that international terrorism has the power to disrupt social life even in the world’s super power.

Since then, a wide-ranging debate has developed about the level of threat that international terrorism poses to the global community. While some people regard international terrorism as a marginal threat, others see it as an existential threat to society.

This paper will argue that international terrorism is the main challenge facing the world in the context of international security and therefore, measures should be taken to address this issue and safeguard global security.

International terrorism has become the greatest danger to world security, overtaking the threats of military confrontations from rival great powers. Stewart (2006) observes that the international security threat posed by military confrontations between rival great powers has reduced dramatically since the Second World War.

Most Western nations have formed alliances such as NATO, which makes it almost impossible for them to engage in aggressive military confrontation against each other. The possession of nuclear weapons by the major powers such as Russia and China acts as a deterrence from any major confrontation (Lutz & Brenda 2004).

Nations are therefore more likely to resort to diplomacy instead of risk military confrontation with each other. However, international terrorists attack nations without fear of retaliation since they do not have a well established base or economic resources that they hope to protect.

The activities of international terrorist organization have made the world unsafe. Terror activities have not been limited to US targets and the rest of the world has suffered from the actions of terrorists. The international terror organization, Al Qaeda did not limit its attacks to US targets and on March 11, 2004, it carried out the Madrid train bombings.

London also experienced terrorist attacks in July 2005 when the London Underground was bombed by Islamist extremists (UK Defence and Security Report 2010). Indonesia experienced terrorist attacks in 2002 that killed 202 people while a hotel in Jakarta was bombed in 2003 killing 12 people.

Thieux (2004) asserts that these attacks prove that international terrorism is a serious and potential threat not only for the United States but also for EU member states and the rest of the world.

International terrorism presents the most significant risk to global nuclear non-proliferation efforts. Presently, all functioning Weapons of Mass Destruction (WMD) including nuclear weapons are in the hands of legitimate governments.

However, intelligence reports indicate that terrorist organizations such as Al Qaeda have made efforts to obtain WMDs especially from weak states such as Pakistan. Bowen and Cottee (2012) state that if international terrorists obtain WMDs, they will be able to inflict major damages to targets all over the world.

International terrorism has increased the vulnerability of nations to attacks from their own citizens. Thieux (2004) documents that in addition to the Islamic radicals who joined the Al Qaeda network in the past, this terror organization now attracts members who are well integrated in the society.

International terrorist organizations are able to radicalize citizens of a country leading to the development of home-grown terrorists. For example, individuals can access jihadi websites and obtain information on suicide bombing (The UK Defence & Security Report 2010). Tackling this threat has proved to be a major challenge for most nations.

Thieux (2004) notes that international terrorism has led to a blurring between foreign and domestic affairs as nations have to deal with issues such as home-grown terrorists and sleeper cells. The difficulty of identifying terrorists increases the risk that these elements pose to the global community.

International terrorists are spread all over the world and it is difficult for law enforcement agencies to correctly identify all potential suspects. Stewart (2006) notes that unlike in a conventional war where the enemy combatants are easy to identify, the diverse pool of individuals involved in international terrorism makes the threat hard to identify.

International terrorism presents a major challenge since these actors do not follow any international laws of combat. There are well-established rules that can be used by nations when dealing with traditional security threats. These laws include rules of engagement that forbid soldiers from attacking unarmed civilians.

Diplomacy can also be used to resolve the differences between nations without resorting to armed confrontation. With international terrorism, there are no rules of engagement and terror organizations target civilians in order to spread fear (Engene 2004). The traditional tools of military deterrence and diplomacy are not effective in dealing with the threat of international terrorism.

International terrorism has led to the development of poor relationships between Western countries and the Arab world. Since most international terrorist organizations are operated by radical Islamists, the policies adopted by countries such as the US to counter them focus on these radical elements. The fight against terrorism has therefore focused on tackling the issue of Islamic extremism (Victoroff 2005).

This has proved to be problematic since terrorism organizations are not disparate and therefore cannot be handled using a uniform policy response. Hammond (2008) asserts that the overemphasis on Islamic extremism has led to the strengthening of the misperception especially in the Middle East that “the anti-terror campaign is actually a war on Islam” (p.220).

This situation has threatened to divide the world on religious basis. Hammond (2008) suggests that the division based on religious differences fostered by international terrorism is proving to be the greatest threat to international unity since the cold war.

International terrorism has contributed to the unpopularity of the US in many countries all over the world and the subsequent inclination of terrorists to attack US targets. Meyer (2009) states that terrorism threatens global security by disrupting the “peace of mind” of citizens and prompting aggressive retaliation by individual states.

Hammond (2008) reveals that following the 9/11 attacks, the Bush administration engaged in controversial security policies and effectively declared that America was at war with international terrorists. Due to the Bush policies, the US carried out military activities against terrorists and their affiliates and used economic means to influence the behaviours or interests of nations that harbour terrorists.

Terrorism threatens to disrupt international relations among traditional allies. Due to globalization, the movement of people from country to country has increased. Many international companies have established themselves in foreign countries and global trade is at a high level. International terrorists target Western citizens in foreign countries leading to immense political and psychological impact.

Tan (2007) documents that in 2002, the Al Qaeda affiliated network in South East Asia, Jemmah Islamiah, planned to carry out a terror attack against American targets in Singapore. If this attack had succeeded, it would have deteriorated the good relationship between the US and Singapore and greatly contributed to the growth of insecurity in the region.

The relationship between Pakistan and the UK has suffered due to international terrorism. The UK has accused Pakistan of not doing enough to prevent terrorism. In 2009, the UK arrested 12 Pakistani students in UK on suspicion of involvement in terrorism (UK Defence and Security Report 2010).

International terrorism undermines the good relationships between nations, and without this amicable relationship, global peace and security cannot be achieved.

The global community considers terrorism to be a significant threat to international peace. Following the events of 9/11, most nations, led by the US, have made a public declaration of war against international terrorism. The potential damages that international terrorists can cause, especially if they acquire WMD has led to arguments that terrorism is an “existential threat” for modern society (Meyer 2009).

With this realization, Western nations have tried to come up with a common and coordinated way of dealing with the threat of international terrorism. However, Thieux (2004) notes that the efforts have not been adequate and terrorism is still a major international threat.

This paper set out to demonstrate that international terrorism is the greatest threat to international security that the global community faces today. It begun by nothing that the global security threat posed by conventional military confrontations between nations is very low. However, the threat presented by international terrorism to global security is on the rise.

This threat has led to the deterioration of relationships especially between the West and Arab countries. The influence of terrorists has spread into many countries all over the world and various attacks have been carried out. For this reason, many countries view international terrorism as a threat to their security. Fighting global terrorism should therefore be a key priority for all nations.

Bowen, W & Cottee, M 2012, ‘Multilateral cooperation and the prevention of nuclear terrorism: pragmatism over idealism’, International Affairs , vol. 88, no. 2, pp. 349–368.

Engene, O 2004, Terrorism in Western Europe: Explaining The Trends Since 1950, Edward Elgar Publishing, NY.

Hammond, A 2008, ‘Two countries divided by a common threat? International perceptions of US and UK counter-terrorism and homeland security responses to the post-September 2001 threat environment’, Place Branding and Public Diplomacy , vol. 4, no. 3, pp. 218–239.

Lutz, J & Brenda, J 2004, Global Terrorism , Routledge, NY. Print.

Meyer, C 2009, ‘International terrorism as a force of homogenization? A constructivist approach to understanding cross-national threat perceptions and responses’, Cambridge Review of International Affairs , vol. 22, no. 4, pp. 647-666.

Stewart, P 2006, ‘Weak States and Global Threats: Fact or Fiction?’, Washington Quarterly, vol. 29, no. 2, pp. 27-53.

Tan, A 2007, ‘Singapore’s Cooperation with the Trilateral Security Dialogue Partners in the War Against Global Terrorism’, Defence Studies , vol. 7, no. 2, pp. 193-207.

Thieux, L 2004, ‘European Security and Global Terrorism: the Strategic Aftermath of the Madrid Bombing’, Central European Review of International Affairs , vol. 22, no. 1, pp. 59-74.

UK Defence and Security Report 2010, Domestic Security Overview , Business Monitor International Ltd, London.

Victoroff, J 2005, ‘The Mind of the Terrorist: A Review and Critique of Psychological Approaches’, The Journal of Conflict Resolution vol. 49, no.1, pp. 3-42.

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IvyPanda. (2019, December 20). International Terrorism: The Challenge to Global Security. https://ivypanda.com/essays/international-terrorism-the-challenge-to-global-security/

"International Terrorism: The Challenge to Global Security." IvyPanda , 20 Dec. 2019, ivypanda.com/essays/international-terrorism-the-challenge-to-global-security/.

IvyPanda . (2019) 'International Terrorism: The Challenge to Global Security'. 20 December.

IvyPanda . 2019. "International Terrorism: The Challenge to Global Security." December 20, 2019. https://ivypanda.com/essays/international-terrorism-the-challenge-to-global-security/.

1. IvyPanda . "International Terrorism: The Challenge to Global Security." December 20, 2019. https://ivypanda.com/essays/international-terrorism-the-challenge-to-global-security/.

Bibliography

IvyPanda . "International Terrorism: The Challenge to Global Security." December 20, 2019. https://ivypanda.com/essays/international-terrorism-the-challenge-to-global-security/.

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COMMENTS

  1. How Terrorism Is Wrong: Morality and Political Violence

    Whether Held's two-prong justification of terrorism can be successfully defended against this and other possible objections or not, it remains an original, complex, and highly important position on the morality of terrorism. The essay presenting it is the centerpiece of Held's book and her most valuable contribution to the discussion of ...

  2. Terrorism and counterterrorism: an overview

    The present collection arises from a set of papers presented at the sixth conference on Terrorism and Counterterrorism Policy at the University of Texas, Dallas. Held between 21 May and 24 May 2014, this conference invited many leading contributors to the study of terrorism and counterterrorism.

  3. International Terrorism: The Challenge to Global Security Essay

    International Terrorism as a Global Challenge. International terrorism has become the greatest danger to world security, overtaking the threats of military confrontations from rival great powers. Stewart (2006) observes that the international security threat posed by military confrontations between rival great powers has reduced dramatically ...