15. Dezember 2022
Julian Wucherpfennig (Hertie School Berlin)
“Border Walls and Terrorism”
Abstract: Are physical walls between countries effective at reducing terrorist attacks? Despite their prohibitive cost and political divisiveness, walls between contiguous countries have recently proliferated as extreme forms of border control, especially following 9/11 and the 2015 refugee crisis. Yet, their effectiveness at mitigating the alleged migration-terrorism nexus is largely unknown. We use the most up-to-date dataset on walls between adjacent countries worldwide (1920-2018), and rely on the staggered construction of walls across some country-dyads over time as an identification strategy. Our findings demonstrate that border walls are a very poor defense against transnational terrorism. Not only do they fail to curb terrorist attacks but, under specific conditions, walls may actually backfire, so that attacks substantially increase after the erection of a wall. Our difference-in-differences analyses and case studies of the walls between Saudi Arabia-Iraq (2014) and Israel-Egypt (2010) reveal two main mechanisms. First, out-group attitudes among both separated communities significantly deteriorate after the construction of the wall thereby fuelling intergroup conflict. Second, when walls are built by states with sizeable out-group populations with kinship ties across the border, exacerbated grievances and reduced opportunity costs among the targeted communities generate incentives for terrorist organizations from the separated country to step up recruitment and terrorist attacks against the builder country. As a result, terrorist threats increase after the construction of the wall. These findings have critical scholarly and policy implications by demonstrating the unintended consequences of highly restrictive border policies and showing how walls are not only ineffective against terrorism but may ultimately exacerbate the problem they intend to resolve.
Der Vortrag findet am Donnerstag, den 15. Dezember 2022, von 14:00-15:30 s.t. im Seminarraum 01012 (Rempartstraße 16, 1. OG) statt. Es kann auch online teilgenommen werden. Bitte kontaktieren Sie email@example.com für die Zugangsdaten.
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