This new handbook is a comprehensive collection of cutting-edge essays that investigate the contribution of Critical Terrorism Studies to our understanding of contemporary terrorism and counterterrorism. Terrorism remains one of the most important security and political issues of our time. After 9/11, Critical Terrorism Studies (CTS) emerged as an alternative approach to the mainstream study of terrorism and counterterrorism, one which combined innovative methods with a searching critique of the abuses of the war on terror. This volume explores the unique contribution of CTS to our understanding of contemporary non-state violence and the state's response to it. It draws together contributions from key thinkers in the field who explore critical questions around the nature and study of terrorism, the causes of terrorism, state terrorism, responses to terrorism, the war on terror, and emerging issues in terrorism research. Covering a wide range of topics including key debates in the field and emerging issues, the Routledge Handbook of Critical Terrorism Studies will set a benchmark for future research on terrorism and the response to it. This handbook will be of great interest to students of terrorism studies, political violence, critical security studies and IR in general.