Routledge Handbook of U.S. Counterterrorism and Irregular Warfare Operations : Routledge : 9780367759032 : 0367759039 : 25 Sep 2023 : This handbook comprises essays by leading scholars and practitioners on the topic of U.S. counterterrorism and irregular warfare campaigns and operations around the globe. Terrorist groups have evolved substantially since 9/11, with the Islamic State often described as a pseudo-state, a terrorist group, and insurgency all at the same time. While researchers', analysts', and policymakers' understanding of terrorism has grown immensely over the past two decades, similar advancements in the understanding of counterterrorism lag. As such, this handbook explains why it is necessary to take a broader view of counterterrorism which can, and often does, include irregular warfare. The volume is divided into three thematic sections: Part I examines modern terrorism in the Islamic world and gives an overview of the major terrorist groups from the past three d