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Introduction to International Relations provides a concise and engaging introduction to the principal international relations theories and, uniquely, explores how theory can be used to analyse contemporary issues.Readers are introduced to the most important theories, encompassing both classical and contemporary approaches and debates. Throughout the text the authors encourage readers to consider the strengths and weaknesses of the theories presented, and the major points of contention between them. In so doing, the text helps the reader to build a clear understanding of how major theoretical debates link up with each other, and how the structure of the discipline of international relations is established.Jackson and Sørensen place a strong emphasis throughout on the relationship between theory and practice, carefully explaining how theories organise and shape our view of the world. A chapter is dedicated to key global issues and how theory can be used as a tool to analyse and interpret these issues. New to this editionIncreased coverage of significant and current issues in global politics, including terrorism, religion, the environment, and war and peaceA substantially updated chapter on the contemporary debates in international political economy, including capitalist diversity, models of development, and inequality New end of chapter questions to encourage readers to link the key theories to practice, highlighting how theories matter