Nicholas J Wheeler is Professor of International Relations and Director of the Institute for Conflict, Cooperation, and Security at the University of Birmingham. His publications include: (with Ken Booth) The Security Dilemma: Fear, Cooperation, and Trust in World Politics (Basingstoke: Palgrave Macmillan, 2008) and Saving Strangers: Humanitarian Intervention in International Society (Oxford: Oxford University Press, 2000). His new book, Trusting Enemies: Interpersonal Relationships in International Conflict was published by Oxford University Press in March 2018. He is co-editor with Professor Christian Reus-Smit and Professor Evelyn Goh of the prestigious Cambridge Series in International Relations.