Deen Chatterjee is senior advisor and professorial fellow in the S. J. Quinney College of Law at the University of Utah, and a Global Ethics Fellow at the Carnegie Council for Ethics in International Affairs in New York City. His areas of specialization are justice and global initiative, ethics of war and peace, and philosophy of religion and culture. His publications include, most recently, The Ethics of Preventive War (2013). He is currently working on a book project on the idea of just peace as an antidote to just war. deen.chatterjee@law.utah.edu

Nader Hashemi is director of the Center for Middle East Studies and assistant professor of Middle East and Islamic Politics at the Josef Korbel School of International Studies, University of Denver. He obtained his doctorate from the Department of Political Science at the University of Toronto and previously was an Andrew W. Mellon Postdoctoral Fellow at Northwestern University and a visiting assistant professor at the UCLA Global Institute. He is the author of Islam, Secularism and Liberal Democracy: Toward a Democratic Theory for Muslim Societies (2009) and co-editor of The People Reloaded: The Green Movement and the Struggle for Iran's Future (2011). Nader.Hashemi@du.edu

David C. Hendrickson is a professor of political science at Colorado College, where he has taught since 1983. He is the author of seven books, including Union, Nation, or Empire: The American Debate over International Relations, 1789–1941 (2009); Peace Pact: The Lost World of the American Founding (2003); and (with Robert W. Tucker) The Imperial Temptation: The New World Order and America's Purpose (1992). He has written widely for various foreign policy journals, including two earlier contributions to this journal: “In Defense of Realism: A Commentary on Just and Unjust Wars” (1997) and “Preserving the Imbalance of Power” (2003). DHendrickson@ColoradoCollege.edu

Andrew Hurrell is Montague Burton Professor of International Relations at Oxford University and a Fellow of Balliol College. He was elected to the British Academy in 2011 and to the Johns Hopkins Society of Scholars in 2010. His research interests cover theories of international relations; theories of global governance; the history of thought on international relations; comparative regionalism; and the international relations of the Americas, with particular reference to Brazil. His current work examines emerging powers and global order. His On Global Order: Power, Values, and the Constitution of International Society received the International Studies Association Prize for Best Book in the field of International Relations in 2009. Andrew.hurrell@politics.ox.ac.uk

Akira Iriye is Charles Warren Professor of American History, Emeritus, Harvard University. He has served as president of the Society for Historians of American Foreign Relations and of the American Historical Association. He is the author of several books dealing with the history of international relations, including Global and Transnational History: The Past, Present, and Future (2013), Global Community: The Role of International Organizations in the Making of the Contemporary World (2002), and Cultural Internationalism and World Order (1997). He is co-editor, with Pierre Yves Saunier, of The Palgrave Dictionary of Transnational History (2009). airiye@fas.harvard.edu

Laura Sjoberg is associate professor of political science at the University of Florida, where her research focuses on questions of gender and international security. She is author and editor of eight books, including, most recently (with Caron Gentry), Women, Gender, and Terrorism (2012). She currently serves as homebase editor of the International Feminist Journal of Politics. sjoberg@ufl.edu

Nigel Young, educated at Oxford University and the University of California, Berkeley, is editor-in-chief of the four-volume Oxford International Encyclopedia of Peace. Young is a co-founder of the first Peace Studies Department in Britain (at the University of Bradford, 1973–1979) and was a holder of the first endowed Peace Studies Chair in the United States (at Colgate University, 1984–2004). He has published numerous books and other publications on peace theory, history, and movements; war and war resistance; the sociology of the state; the New Left; and pacifism. He has taught at the University of California, Colgate University, Earlham College, University of Birmingham, and Bradford University, as well as in Germany, Austria, and Norway. In 2011, Young was awarded the Dayton Literary Peace Prize for scholarly achievement. Now based in England, he is completing a book on historical memory and modern war. mail@nigelyoungpeace.com