This book is about the global resurgence of culture and religion in international relations, and how these social changes are transforming our understanding of International Relation theory, and the key policy-related issue areas in world politics. It is evident in the on-going debates over the 'root causes' of 9/11 that there are many scholars, journalists and members of the public who still believe culture and religion can be explained away by appeals to more 'basic' economic, social or political forces in society. Therefore The Global Resurgence of Religion and the Transformation of International Relations presents an argument for taking culture - and particularly religion - as social forces that are important for understanding world politics in the post-Westphalian era.