Joachim A. Koops is Associate Professor of Political Science at Vesalius College, Free University of Brussels (VUB) and Academic Director of the European Peace & Security Studies (EPSS) Programme and the Executive Course in Global Risk Analysis and Crisis Management (GRACM). He is also Research Professor at the VUB's Institute for European Studies and the founding Director of the Global Governance Institute (GGI), Brussels. His latest publications include SHIRBRIG and the Project of a UN Army: Successes, Failures, Lessons Learned (co-authored with C. Tatschl, Nomos, 2014), The Responsibility to Protect and the Third Pillar: A Critical Appraisal (co-edited with D. Fiott, PalgraveMacMillan, 2015), and The European Union as an Integrative Power? Assessing the EU's Effective Multilateralism towards the United Nations and NATO (Brussels University Press, 2011). Norrie MacQueen is Honorary Research Fellow in the School in International Relations at the University of St Andrews. He worked for the Mozambican Ministry of Education in the years following the country's independence and taught for several years at the University of Papua New Guinea. More recently he served as an electoral officer with the United Nations peacekeeping mission in Timor-Leste. His latest books include: The United Nations, Peace Operations and the Cold War (2nd edition Longman, 2011), Humanitarian Intervention and the United Nations (Edinburgh UP, 2011), and The United Nations: a Beginner's Guide (Oneworld, 2010). Thierry Tardy is Senior Analyst at the European Union Institute for Security Studies (EUISS) in Paris. Previously he was Senior Fellow at the Geneva Centre for Security Policy (GCSP). He has researched and published on conflict management with a particular focus on the United Nations and the European Union, inter-institutional cooperation in security governance, security regionalism, and the EU Common Security and Defence Policy. His books include Peacekeeping in Africa: The Evolving Security Architecture (Routledge, 2014, edited with M. Wyss), and European Security in a Global Context. Internal and External Dynamics (Routledge, 2009, edited). Paul D. Williams is Associate Professor in the Elliott School of International Affairs at the George Washington University, USA. He also serves as a Non-resident Senior Adviser at the International Peace Institute (IPI) in New York City and a Visiting Professor at the Institute for Peace and Security Studies in Addis Ababa, Ethiopia. At IPI, he co-manages the Providing for Peacekeeping Project, which aims to generate and disseminate data and analysis to support efforts to improve the quality of troop and police contributions to UN peacekeeping and fill key capability gaps in those missions. His latest books include: Providing Peacekeepers: The Politics, Challenges and Future of UN Peacekeeping Contributions (Oxford University Press, 2013), Understanding Peacekeeping (Polity, 2nd ed. 2010), and The International Politics of Mass Atrocities: The Case of Darfur (Routledge, 2010).