Brings together perspectives from leading authors to provide students with an authoritative and accessible insight into the subject. Combines theory and practice through extensive case study sections at the end of each chapter, providing students with the opportunity for debate and discussion. Thoroughly revised and updated to reflect new developments in the field. Provides an extensive range of pedagogical features throughout to facilitate student learning. Accompanied by a comprehensive online resource centre comprising a flashcard glossary, revision guide, web links, figures and tables from the book, and PowerPoint slides. New to this edition New chapter on Normative International Relations Theory, replacing the chapter on International Political Theory New 'key text' box outlining a key text in the subject for each chapter Drawing on a wealth of expertise from an international team of contributors, the second edition of International Relations Theory presents a diverse selection of theoretical positions, from historically dominant traditions through to powerful critical voices since the 1980s. Each chapter explains the theoretical background to the position taken, and outlines how and why the theories are relevant. Students are encouraged to analyse and debate the issues presented in the text before deciding which of the theories they believe to be most useful when explaining and understanding international relations. The text is accompanied by an Online Resource Centre providing additional resources for lecturers and students.