Focusing on the phenomenon of terrorism in the post-Cold War and post-9/11 era, Terrorism and Counterterrorism looks at this form of political violence in an international and American context and in light of new and historical trends. Broadly addressing the question "What is terrorism?," Brigitte Nacos, a renowned expert in the field, clearly defines and discusses terrorism's many causes, actors, and strategies as well as anti- and counter-terrorist responses. In addition, this text uniquely investigates terrorism's relationship with the media and the public. Comprehensive and highly readable, Terrorism and Counterterrorism introduces students to key concepts in the study of terrorism and political violence and helps them challenge preconceptions of this complex and vital issue.