My previous research has focused on two main areas. The first is the security dilemma and after writing a series of co-authored articles with Ken Booth on this topic during the 1980s and 1990s, we published in 2008 The Security Dilemma: Fear, Cooperation and Trust in World Politics (Palgrave Macmillan 2008). My second area of research has focused on the concept of humanitarian intervention. My 2000 book Saving Strangers developed a framework for judging the legitimacy of interventions that might be justified in humanitarian terms, and applied this framework to Cold War cases and post-Cold War cases of humanitarian intervention (Northern Iraq, Somalia, Rwanda, Bosnia, and Kosovo). Since the publication of this book, I have contributed to the academic debate over the ‘responsibility to protect.’ My new research developing out of my work on the security dilemma focuses on the potential for building new trusting relationships between the major nuclear powers and to the possibilities for achieving a world free of nuclear weapons (full details of this research can be found on the website of the David Davies Memorial Institute of International Studies).