Written by three leading scholars in the field of International Relations, this textbook provides an authoritative introduction to the discipline, including coverage of security studies, international political economy, international organizations and non-state actors. A comprehensive history chapter also helps students to appreciate the key developments that created today's political landscape. The book frames each chapter around an enduring question; long-standing dilemmas that have engaged generations of IR scholars and students--such as why do wars occur, and how can economic benefits be shared more equally--demonstrating the continuing relevance of these issues and ideas. A collection of innovative learning tools equips students with the skills they need for sound analysis of today's headlines.