Chris Armstrong is a professor of political theory at the University of Southampton. His research interests currently center on discussions of distributive justice, and global distributive justice in particular. He is the author of Global Distributive Justice: An Introduction (2012), and is currently working on a book on natural resources, global justice, and egalitarianism. C.Armstrong@soton.ac.uk

Nigel Biggar is Regius Professor of Moral and Pastoral Theology, and Director of the McDonald Centre for Theology, Ethics, and Public Life at the University of Oxford. His most recent book, In Defence of War, was published in 2013. nigel.biggar@chch.ox.ac.uk

James Turner Johnson is Distinguished Professor of Religion, and Associate of the Graduate Program in Political Science at Rutgers–The State University of New Jersey, where he has been on the faculty since 1969. His research and teaching have focused principally on the historical development and application of the Western and Islamic moral traditions related to war, peace, and the practice of statecraft. Johnson has received Rockefeller, Guggenheim, and National Endowment for the Humanities fellowships and various other research grants, and has directed two NEH summer seminars for college teachers. His books include Ethics and the Use of Force: Just War in Historical Perspective (2011), The War to Oust Saddam Hussein (2005), Morality and Contemporary Warfare (1999), The Holy War Idea in Western and Islamic Tradition (1997), and (edited with John Kelsay) Just War and Jihad: Historical and Theoretical Perspectives on War and Peace in Western and Islamic Traditions (1991) and Cross, Crescent, and Sword: The Justification and Limitation of War in Western and Islamic Tradition (1990). A new book, Sovereignty: Moral and Historical Perspectives, will appear in 2014. jtj@rci.rutgers.edu

John Kelsay is Distinguished Research Professor of Religion at Florida State University in Tallahassee. His publications include Arguing the Just War in Islam (2007), Islam and War (1993), and a number of articles on topics related to the cultural regulation of armed force. jkelsay@fsu.edu

Margaret Moore is a professor in the Political Studies department at Queen's University (Kingston, Canada), where she teaches political theory. She has published a number of books and articles on issues of distributive justice, democratic theory, territory, nationalism, and multiculturalism, including Ethics of Nationalism (2001) and Foundations of Liberalism (1993). In addition, she has recently completed a book manuscript entitled A Political Theory of Territory. Moore has published in such journals as Philosophical Studies, Political Theory, and Political Studies. moorem@queensu.ca

Valerie Morkevicius is an assistant professor of political science at Colgate University. She is the author of several articles on Protestant approaches to the ethics of conflict, including “Changing the Rules of the Game: A Just Peace Critique of Just War Thought” (2011) and “Ethics of War in Protestant Christianity” (2009) as well as essays on Hindu and Shia just war thinking in The Prism of Just War: Asian and Western Perspectives on the Legitimate Use of Military Force (2010). She holds a PhD in political science from the University of Chicago (2008), and was a 2010–2011 resident fellow at the Stockdale Center for Ethical Leadership at the United States Naval Academy. vmorkevicius@colgate.edu

David Scheffer is the Mayer Brown/Robert A. Helman Professor of Law, and Director of the Center for International Human Rights at Northwestern University School of Law. He has served as an ambassador to the United Nations, has sat on the Deputies Committee of the U.S. National Security Council (1993–1996), and was the first U.S. Ambassador-at-Large for War Crimes Issues. Currently he serves as the U.N. Secretary-General's Special Expert on United Nations Assistance to the Khmer Rouge Trials. Scheffer was recently awarded a Berlin Prize fellowship, and is in residence at the American Academy in Berlin during the Fall 2013 term. d-scheffer@law.northwestern.edu

Edward Skidelsky studied philosophy and theology at Oxford University, where (following some time working in Russia) he returned to write a PhD on the early twentieth century German philosopher Ernst Cassirer (published in January 2009 as Ernst Cassirer: The Last Philosopher of Culture). He is now a lecturer in philosophy at Exeter University, specializing in moral and political philosophy. He has written essays on the ethics of capitalism and on the concept of happiness. His most recent book, co-written with his father, Robert, is How Much is Enough? Money and the Good Life (2012), which is being translated into fifteen languages worldwide. A following book, The Language of the Virtues, is forthcoming. Skidelsky appears regularly in the press and on radio on a variety of subjects, including philosophy, religion, and intellectual history. E.B.H.Skidelsky@exeter.ac.uk