Charles R. Beitz teaches political philosophy at Princeton University. His philosophical and teaching interests focus on international political theory, democratic theory, the theory of human rights, and more generally on moral problems in public affairs. His books include Political Equality: An Essay in Democratic Theory (1990), Political Theory and International Relations (1999), and The Idea of Human Rights (2009), as well as articles on a variety of topics in political philosophy. Professor Beitz is the editor of Philosophy & Public Affairs and the director of the University Center for Human Values at Princeton.

Michael W. Doyle is the Harold Brown Professor of International Affairs, Law, and Political Science at Columbia University. His current research focuses on international law and international relations. His major publications include Empires (1986), Ways of War and Peace (1997), Making War and Building Peace (with Nicholas Sambanis, 2006), and Striking First: Preemption and Prevention in International Conflict (2008). He served as Assistant Secretary-General and Special Adviser to United Nations Secretary-General Kofi Annan, where his responsibilities included strategic planning (the Millennium Development Goals), outreach to the international corporate sector (the Global Compact), and relations with Washington. He is currently an individual member and the chair of the UN Democracy Fund, elected by the members and appointed by UN Secretary-General Ban Ki-moon.

Kent J. Kille is Chair and Associate Professor in the Department of Political Science at the College of Wooster. His research interests include international organizations, political leadership, transnational actors and relations, and peace studies. He is the author of From Manager to Visionary: The Secretary-General of the United Nations (2006) and editor of The UN Secretary-General and Moral Authority: Ethics and Religion in International Leadership (2007). Other work appears in International Studies Review, International Studies Perspectives, and Political Psychology.

Will Kymlicka is the Canada Research Chair in Political Philosophy at Queen's University and a visiting professor in the Nationalism Studies Program at the Central European University in Budapest. He has written several books on issues of multiculturalism and minority rights, including Multicultural Citizenship: A Liberal Theory of Minority Rights (1995) and Multicultural Odysseys: Navigating the New International Politics of Diversity (2007).

Daniel Philpott is Associate Professor of Political Science and Peace Studies at the University of Notre Dame. He is the author of Revolutions in Sovereignty: How Ideas Shaped Modern International Relations (2001), and is currently completing Just and Unjust Peace: An Ethic of Political Reconciliation.