Abstrak

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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.