Barry Buzan is Montague Burton Professor of International Relations at the London School of Economics and Honorary Professor at the Universities of Copenhagen and Jilin. His books include: The United States and the Great Powers: World Politics in the Twenty-First Century (2004); Regions and Powers: The Structure of International Security (2003, with Ole Wæver); The Arms Dynamic in World Politics (1998, with Eric Herring); Security: A New Framework for Analysis (1998, with Ole Wæver and Jaap de Wilde); People, States and Fear: The National Security Problem in International Relations (1991) and An Introduction to Strategic Studies: Military Technology and International Relations (1987). Lene Hansen is an Associate Professor of International Relations in the Department of Political Science at the University of Copenhagen. She is the author of Security as Practice: Discourse Analysis and the Bosnian War (2006) and the co-editor of European Integration and National Identity: The Challenge of the Nordic States (2002, with Ole Wæver).

• Introduction; 1. Defining International Security Studies; 2. The key questions in International Security Studies: the state, politics and epistemology; 3. The driving forces behind the evolution of International Security Studies; 4. Strategic studies, deterrence and the Cold War; 5. The Cold War challenge to national security; 6. International Security Studies post-Cold War: the traditionalists; 7. Widening and deepening security; 8. Responding to 9/11: a return to national security?; 9. Conclusions.

'A rich text drawing on an extraordinarily wide range of materials to answer key questions in the debate on international security in the contemporary academic world: what should be part of International Security Studies, what should not, and why? This is a volume that will provoke enormous debate wherever international security is researched and taught, and is sure to become a keynote contribution to the literature.' Stuart Croft, Professor of International Security, Warwick University

Barry Buzan is Montague Burton Professor of International Relations at the London School of Economics and Honorary Professor at the Universities of Copenhagen and Jilin. His books include: The United States and the Great Powers: World Politics in the Twenty-First Century (2004); Regions and Powers: The Structure of International Security (2003, with Ole Wæver); The Arms Dynamic in World Politics (1998, with Eric Herring); Security: A New Framework for Analysis (1998, with Ole Wæver and Jaap de Wilde); People, States and Fear: The National Security Problem in International Relations (1991) and An Introduction to Strategic Studies: Military Technology and International Relations (1987). Lene Hansen is an Associate Professor of International Relations in the Department of Political Science at the University of Copenhagen. She is the author of Security as Practice: Discourse Analysis and the Bosnian War (2006) and the co-editor of European Integration and National Identity: The Challenge of the Nordic States (2002, with Ole Wæver).

• Introduction; 1. Defining International Security Studies; 2. The key questions in International Security Studies: the state, politics and epistemology; 3. The driving forces behind the evolution of International Security Studies; 4. Strategic studies, deterrence and the Cold War; 5. The Cold War challenge to national security; 6. International Security Studies post-Cold War: the traditionalists; 7. Widening and deepening security; 8. Responding to 9/11: a return to national security?; 9. Conclusions.

'A rich text drawing on an extraordinarily wide range of materials to answer key questions in the debate on international security in the contemporary academic world: what should be part of International Security Studies, what should not, and why? This is a volume that will provoke enormous debate wherever international security is researched and taught, and is sure to become a keynote contribution to the literature.' Stuart Croft, Professor of International Security, Warwick University

Barry Buzan is Montague Burton Professor of International Relations at the London School of Economics and Honorary Professor at the Universities of Copenhagen and Jilin. His books include: The United States and the Great Powers: World Politics in the Twenty-First Century (2004); Regions and Powers: The Structure of International Security (2003, with Ole Wæver); The Arms Dynamic in World Politics (1998, with Eric Herring); Security: A New Framework for Analysis (1998, with Ole Wæver and Jaap de Wilde); People, States and Fear: The National Security Problem in International Relations (1991) and An Introduction to Strategic Studies: Military Technology and International Relations (1987). Lene Hansen is an Associate Professor of International Relations in the Department of Political Science at the University of Copenhagen. She is the author of Security as Practice: Discourse Analysis and the Bosnian War (2006) and the co-editor of European Integration and National Identity: The Challenge of the Nordic States (2002, with Ole Wæver).

• Introduction; 1. Defining International Security Studies; 2. The key questions in International Security Studies: the state, politics and epistemology; 3. The driving forces behind the evolution of International Security Studies; 4. Strategic studies, deterrence and the Cold War; 5. The Cold War challenge to national security; 6. International Security Studies post-Cold War: the traditionalists; 7. Widening and deepening security; 8. Responding to 9/11: a return to national security?; 9. Conclusions.

'A rich text drawing on an extraordinarily wide range of materials to answer key questions in the debate on international security in the contemporary academic world: what should be part of International Security Studies, what should not, and why? This is a volume that will provoke enormous debate wherever international security is researched and taught, and is sure to become a keynote contribution to the literature.' Stuart Croft, Professor of International Security, Warwick University