This is the first book to examine the range of thinking about security that has emerged in the academic literature over the past fifteen years.

Terry Terriff is a Senior Lecturer in International Security in the Department of Political Science and International Studies at the University of Birmingham.

Stuart Croft is Professor of International Relations in the Department of Political Science and International Studies, University of Birmingham.

Lucy James is Lecturer in the Centre for International Politics at the University of Manchester and Patrick Morgan is Professor of Peace and Conflict Studies at the University of California, Irvine.