This reader brings together key contributions from many of the leading scholars in the field, offering students an informed overview of the most significant work in security studies. The editors chart the development of the key theoretical and empirical debates in security studies in the Cold War and post-Cold War periods, introducing the ideas of the most influential 'past masters' and contemporary thinkers on security in the UK, US and elsewhere. The book is divided into five areas: * What is Security? * Security Paradigms * Security Dimensions and Issues * Security Frameworks and Actors * The Future of Security. In order to guide students through the issues, the book has a substantial critical introduction exploring the development of security studies, as well as introductory essays that provide an overview of each section, highlighting clearly how the readings fit together. Suggestions for further reading and key questions for discussion are also included. Security Studies is an invaluable resource for all students of security studies and international relations.