Bringing together the most influential scholars in the field, the fourth edition of this best-selling text provides unrivalled coverage of International Relations theories and arguments. Dunne, Kurki and Smith explore the full spectrum of theoretical perspectives and debates, ranging from the historically dominant traditions of realism, liberalism, and Marxism to postcolonialism and green theory. Each chapter is dedicated to a particular theory and features a case study that bridges theory and practice, and shows how theory can be used to explain real-world political dilemmas. Spotlights on key books and articles encourage readers to go beyond the textbook and explore important works in the field, and new case study questions encourage analytical thinking and help readers understand the value of applying theory to concrete political problems. The text is accompanied by an Online Resource Centre, which provides additional resources for both lecturers and students. For students: – Expand your reading with web links organized by chapter that point you to pertinent articles and useful websites. – Test your understanding of key terms with the flashcard glossary. – Use our revision guide as a basis for your notes and exam preparation. For lecturers: – Use the adaptable PowerPoint slides as the basis for lecture presentations, or as hand-outs in class.