Fully revised and updated to cover contemporary debates in international relations, the new edition of this successful textbook will provide an ideal introduction to the theories in world politics. The strengths and weaknesses of each theory are critically examined and their main points of contention are thoroughly discussed. New to this Edition: ·The book is accompanied by a dedicated website--including case material, web links and further questions for each chapter. The site helps students fully understand IR theory and puts the theory into practice with analysis of real-life issues ·Additional chapters on International Political Economy--one chapter covers classical theories and the other covers contemporary debates ·New chapters on methodological debates--one chapter covers classical versus positivist approaches and the other covers post-positivist approaches ·Chapter 8 on 'New Issues in IR': the section on sovereignty has been upgraded to incorporate changes in statehood and new security challenges post September 11.