The textbook provides a differentiated, clear, and comprehensible overview of the state and issues of knowledge regarding terrorism and counter-terrorism. Terrorist violence remains high on the political and media agenda, yet it continues to be a complex and challenging phenomenon. Along central questions and controversies, the book offers an introductory presentation of what terrorism actually is, what danger it truly poses, how it can be explained, and what can be done about it. It highlights key findings and challenges and illustrates them vividly with historical and current examples.