Terrorist attacks in Brussels (May 2014) and Paris (January and November 2015) highlight the threat related to the arrival of foreign fighters (FFs) from civil wars elsewhere. We develop an argument suggesting that terrorism at home is systematically affected by the exit of the so-called FFs out of civil wars abroad. We contend that foreign civil conflicts ending in success for rebel groups can result in a surplus of well-trained FFs, increasing the risk of terrorism at home. By contrast, when rebel groups are defeated in foreign civil conflicts, we anticipate a restriction in the flow of FFs, which reduces the likelihood of terrorism at home. Empirical analyses on most countries for the years 1970 to 2006 support these hypotheses. Our tests also demonstrate that the flow of FFs is associated with the creation of new terrorism campaigns rather than the exacerbation of existing operations.
AksoyDenizCarterDavid B.. 2014. “Electoral Institutions and the Emergence of Terrorist Groups.” British Journal of Political Science44 (1): 181–204.
2.
AndertonCharles H.CarterJohn R.. 2011. “Conflict Datasets: A Primer for Academics, Policymakers, and Practitioners.” Defence and Peace Economics22 (1): 21–42.
3.
AvdanNazli. 2014. “Do Asylum Recognition Rates in Europe Respond to Transnational Terrorism? The Migration-security Nexus Revisited.” European Union Politics15 (4): 445–71.
4.
BakkeKristin M.2014. “Help Wanted? The Mixed Record of Foreign Fighters in Domestic Insurgencies.” International Security38 (4): 150–87.
CarterDavid B.SignorinoCurtis S.. 2010. “Back to the Future: Modeling Time Dependence in Binary Data.” Political Analysis18 (3): 271–92.
15.
CheckelJeffrey T.2013. Transnational Dynamics of Civil War. Cambridge, MA: Cambridge University Press.
16.
CheibubJose AntonioGandhiJenniferVreelandJames Raymond. 2010. “Democracy and Dictatorship Revisited.” Public Choice143 (1): 67–101.
17.
ChoiSeung-WhanSalehyanIdean. 2013. “No Good Deed Goes Unpunished: Refugees, Humanitarian Aid, and Terrorism.” Conflict Management and Peace Science30 (1): 53–75.
18.
ChuTiffany S.BraithwaiteAlex. 2017. “The Impact of Foreign Fighters on Civil Conflict Outcomes.” Research and Politics4(3): 1–7.
19.
CollierPaulElliottV. L.HegreHavardHoefflerAnkeReynal-QuerolMartaSambanisNicholas. 2003. Breaking the Conflict Trap: Civil War and Development Policy, Vol. 1. Washington, DC: World Bank.
20.
EndersWalterSandlerTodd. 1993. “The Effectiveness of Antiterrorism Policies: A Vector-autoregression-intervention Analysis.” American Political Science Review87 (4): 829–44.
21.
EndersWalterSandlerTodd. 2006. “Distribution of Transnational Terrorism among Countries by Income Class and Geography after 9/11.” International Studies Quarterly50(2)367–93.
22.
EndersWalterSandlerTodd. 2011. The Political Economy of Terrorism, 2nd ed. Cambridge, MA: Cambridge University Press.
23.
EndersWalterSandlerToddGaibulloevKhusrav. 2011. “Domestic versus Transnational Terrorism: Data, Decomposition, and Dynamics.” Journal of Peace Research48 (3): 319.
24.
EuropolOCTA. 2011. EU Organised Crime Threat Assessment, 2011. The Hague, the Netherlands: European Police Office.
25.
FearonJames D.LaitinDavid D.. 2003. “Ethnicity, Insurgency, and Civil War.” American Political Science Review97 (1): 75–90.
26.
FindleyMichael G.YoungJoseph K.. 2012. “Terrorism and Civil War: A Spatial and Temporal Approach to a Conceptual Problem.” Perspectives on Politics10 (2): 285–305.
27.
FortnaVirginia Page. 2015. “Do Terrorists Win? Rebels’ Use of Terrorism and Civil War Outcomes.” International Organization69 (3): 519–56.
GhobarahHazem AdamHuthPaulRussettBruce. 2003. “Civil Wars Kill and Maim People—Long after the Shooting Stops.” American Political Science Review97 (2): 189–202.
30.
GleditschKristian Skrede. 2007. “Transnational Dimensions of Civil War.” Journal of Peace Research44 (3): 293–309.
HazenJennifer M.2013. What Rebels Want: Resources and Supply Networks in Wartime. Ithaca, NY: Cornell University Press.
34.
HegghammerThomas. 2013. “Should I Stay or Should I Go? Explaining Variation in Western Jihadists’ Choice between Domestic and Foreign Fighting.” American Political Science Review107 (1): 1–15.
35.
HeymanEdwardMickolusEdward. 1980. “Observations on ‘Why Violence Spreads.’” International Studies Quarterly24 (2): 299–305.
36.
HorowitzMichael C.2010. “Nonstate Actors and the Diffusion of Innovations: The Case of Suicide Terrorism.” International Organization64 (1): 33–64.
37.
Human Rights Watch. 2001. “Afghanistan Crisis of Impunity: The Role of Pakistan, Russia and Iran in Fueling the Civil War.” 13 (3): 1–58. Accessed October 15, 2016. https://www.hrw.org/reports/2001/afghan2/.
MidlarskyManus I.CrenshawMarthaYoshidaFumihiko. 1980. “Why Violence Spreads: The Contagion of International Terrorism.” International Studies Quarterly24 (2): 262–98.
MiltonDanielSpencerMeganFindleyMichael. 2013. “Radicalism of the Hopeless: Refugee Flows and Transnational Terrorism.” International Interactions39 (5): 621–45.
50.
MurdochJames C.SandlerTodd. 2002. “Economic Growth, Civil Wars, and Spatial Spillovers.” Journal of Conflict Resolution46 (1): 91–110.
51.
MurdochJames C.SandlerTodd. 2004. “Civil Wars and Economic Growth: Spatial Dispersion.” American Journal of Political Science48 (1): 138–51.
52.
MyrickRachelReidLindsayKaderaKelly M.CrescenziMark J. C.. 2015. “Conflict Environments and Civil War.” Working paper, University of North Carolina, Chapel Hill.
53.
NemethStephen C.MausleinJacob A.StapleyCraig. 2014. “The Primacy of the Local: Identifying Terrorist Hot Spots Using Geographic Information Systems.” The Journal of Politics76 (2): 304–17.
54.
NeumayerEric. 2006. “Unequal Access to Foreign Spaces: How States Use Visa Restrictions to Regulate Mobility in a Globalized World.” Transactions of the Institute of British Geographers31 (1): 72–84.
55.
PiazzaJames A.2008. “Incubators of Terror: Do Failed and Failing States Promote Transnational Terrorism?” International Studies Quarterly52 (3): 469–88.
56.
RossJeffrey Ian. 1993. “Structural Causes of Oppositional Political Terrorism: A Causal Model.” Journal of Peace Research30 (3): 317–29.
57.
SalehyanIdeanGleditschKristian Skrede. 2006. “Refugees and the Spread of Civil War.” International Organization60 (2): 335–66.
58.
SavunBurcuPhillipsBrian J.. 2009. “Democracy, Foreign Policy, and Terrorism.” Journal of Conflict Resolution53 (6): 878–904.
59.
StantonJessica A.2013. “Terrorism in the Context of Civil War.” The Journal of Politics75 (4): 1009–22.
60.
StedmanStephen John. 1997. “Spoiler Problems in Peace Processes.” International Security22 (2): 5–53.
61.
ThomasJakana. 2014. “Rewarding Bad Behavior: How Governments Respond to Terrorism in Civil War.” American Journal of Political Science58 (4): 804–18.
62.
TirmanJohn. 2004. The Maze of Fear: Security and Migration after 9/11. New York: New Press.
63.
VreelandJames Raymond. 2008. “The Effect of Political Regime on Civil War.” Journal of Conflict Resolution52 (3): 401–25.
WattsClint. 2009. “Countering Terrorism from the Second Foreign Fighter Glut.” Small Wars Journal28 (12): 1–13.
66.
WeinsteinJeremy. 2007. Inside Rebellion: The Politics of Insurgent Violence. Cambridge, MA: Cambridge University Press.
67.
WilsonMatthewPiazzaJames A.. 2013. “Autocracies and Terrorism: Conditioning Effect of Authoritarian Regime Type on Terrorist Attacks.” American Journal of Political Science57 (4): 941–55.
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