SYMPOSIUM: In Search of a Global Ethic

Christian Barry is director of the Centre for Moral, Social, and Political Theory at the Australian National University. His research focuses on ethical theory, philosophy of action, and international justice. His work includes a monograph with Sanjay Reddy, International Trade and Labour Standards: A Proposal for Linkage (2008) and articles in Philosophy & Public Affairs, Journal of Political Philosophy, Review of International Studies, Politics, Philosophy & Economics, Journal of Applied Philosophy, and Ethics & International Affairs. His book with Gerhard Øverland on the nature of responsibility to address global poverty is forthcoming from Cambridge University Press. Christian.Barry@anu.edu.au

Michael Ignatieff is a Canadian writer, teacher, and former politician. He is Edward R. Murrow Professor of the Practice of the Press, Politics, and Public Policy at the Kennedy School of Government, Harvard University. He served in the Parliament of Canada and was leader of the country's Liberal Party. His books include The Needs of Strangers (1984), Scar Tissue (1992), Blood and Belonging (1993), The Warrior's Honour (1997), Isaiah Berlin (1998), The Rights Revolution (2000), Human Rights as Politics and Idolatry (2001), The Lesser Evil: Political Ethics in an Age of Terror (2004), and Fire and Ashes: Success and Failure in Politics (2013). He is also Centennial Chair of the Carnegie Council for Ethics in International Affairs. Michael_Ignatieff@hks.harvard.edu

Nicholas Rengger is professor of political theory and international relations, St Andrews University, Head of the School of International Affairs at the University of St Andrews, and a former Carnegie Council Global Ethics Fellow. He has served on the Governing Council of the Royal Institute for International Affairs, Chatham House, and was chair of the International Ethics Section of the International Studies Association. He also served as editor of the Review of International Studies from 2006 to 2010. He has published on many aspects of political philosophy, intellectual history, and international relations. His most recent book is Just War and International Order (2013). Njr3@st-andrews.ac.uk

David Rodin is director of research at the Uehiro Centre for Practical Ethics at Oxford University and a Carnegie Council Senior Fellow. A former Rhodes Scholar from New Zealand, he holds a B.Phil. and doctorate in philosophy from Oxford University. His research covers a broad range of issues in moral and political philosophy, with particular emphasis on applied and public policy issues. He has worked on just war theory and the ethics of international conflict, business ethics, and bioethics. Rodin's first book, War and Self-Defense (2002), was awarded the American Philosophical Association Frank Chapman Sharp Prize for the best monograph on the philosophy of war and peace. david.rodin@politics.ox.ac.uk

Cheyney Ryan is a former Global Ethics Fellow of Oxford University's Institute for Ethics, Law, and Armed Conflict; a former Global Ethics Fellow of the Carnegie Council; and a professor of law at the University of Oregon. He has published widely on issues of war and peace, most recently “Democratic Duty and the Moral Dilemmas of Soldiers” in Ethics (October 2011), and is a recipient of the Joseph J. Blau Prize from the Society of Advancement of American Philosophy. His current project is on the ethical and political foundations of pacifism. cheyney.ryan@politics.ox.ac.uk

Michael Joseph Smith is the Thomas C. Sorensen Professor of Political and Social Thought at the University of Virginia, where he has directed the interdisciplinary program in Political and Social Thought since 1999. He is the author of Realist Thought from Weber to Kissinger (1987), the co-editor and co-author (with Linda B. Miller) of Ideas and Ideals: Essays on Politics in Honor of Stanley Hoffmann (1993), and the author of many essays on the ethical dilemmas raised by contemporary international politics. His current research focuses on human rights and the continuing debates on humanitarian intervention. In addition, Smith has served as a member of the Board of Trustees of the Carnegie Council for Ethics in International Affairs since 1995. mjsmith@virginia.edu

SPECIAL SECTION: Just War and Its Critics

Megan Braun is a JD candidate at Yale Law School. A former Rhodes Scholar, she received an MPhil in International Relations from Oxford University in 2013. Her research focuses on just war theory, the use of force short of war, and the ethical challenges posed by emerging technology. Her work has appeared in the Journal of Military Ethics, the Brown Journal of World Affairs, and the Yale Journal of International Law, as well as CNN, Foreign Policy, and Christian Science Monitor. megan.braun@yale.edu

Daniel Brunstetter is associate professor in the Department of Political Science at the University of California, Irvine. He has published on the ethics of war and peace in International Relations, Review of International Studies, Journal of Military Ethics, The Atlantic, and elsewhere. His current research interests concern the moral issues raised when using military force short of war—particularly drones—which is the subject of his latest book project. dbrunste@uci.edu

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 most recent books include Sovereignty: Moral and Historical Perspectives (2014), 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). 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. The article that appears in this issue of Ethics & International Affairs is part of an ongoing project that aims to provide an account of the nature and purposes of the just war tradition, with particular reference to the war on terror.jkelsay@fsu.edu

Cian O'Driscoll is senior lecturer in politics at the University of Glasgow. He is the author of The Renegotiation of the Just War Tradition (2008), and has published articles on the ethics of war in International Studies Quarterly, Review of International Studies, International Studies Review, Millennium: Journal of International Studies, and the Journal of Military Ethics. Cian is also the co-editor of Just War: Authority, Tradition, and Practice (2013), the principal investigator on the Economic and Social Research Council-funded “Moral Victories” project, co-convenor of the Glasgow Global Security Network, and a fellow of the Royal Society of Edinburgh's Young Academy. Cian.O'Driscoll@glasgow.ac.uk

ROUNDTABLE: Reflections on International Peace

David C. Hendrickson is 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, Gender, War, and Conflict (2014). 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

ROUNDTABLE: Nonproliferation in the 21^st Century

Jacques E. C. Hymans is associate professor in the School of International Relations at the University of Southern California. His most recent book, Achieving Nuclear Ambitions: Scientists, Politicians, and Proliferation (2012), received the University of Louisville's Grawemeyer Award for Ideas Improving World Order, the National Academy of Public Administration's Louis Brownlow Award for best book on public administration, and the American Political Science Association's Don K. Price Award for best book on science, technology, and environmental politics. His first book, The Psychology of Nuclear Proliferation: Identity, Emotions, and Foreign Policy (2006), received the International Society of Political Psychology's Alexander L. George Award for best book in political psychology and the Ohio State University Mershon Center's Edgar S. Furniss Award for best first book in international security studies. Hymans has also published articles in such journals as Foreign Affairs, International Security, and Security Studies, and he is a member of several editorial boards, including International Studies Quarterly and The Nonproliferation Review. hymans@usc.edu

J. Bryan Hehir is Montgomery Professor of the Practice of Religion and Public Life at the Harvard Kennedy School of Government and is also the Secretary for Health Care and Social Services at the Archdiocese of Boston. Previously he served for 19 years at the U.S. Conference of Catholic Bishops and taught at the Georgetown University School of Foreign Service. ReverendBryan_Hehir@rcab.org

Nina Tannenwald is director of the International Relations Program at the Watson Institute for International Studies at Brown University and a senior lecturer in the Political Science Department. Her teaching and research interests lie in the areas of international institutions and norms in security issues. Her book, The Nuclear Taboo: The United States and the Non-Use of Nuclear Weapons Since 1945, was awarded the Lepgold Prize for the best book in international relations in 2009. In 2012–2013 she served as a Franklin Fellow in the Office of Multilateral Nuclear and Security Affairs in the U.S. State Department. nina_tannenwald@brown.edu

Ward Wilson is a nuclear weapons policy analyst who poses fundamental challenges to the rationale for keeping nuclear weapons, using pragmatic arguments and reassessments of cold war evidence. A senior policy analyst at the British American Security Information Council, he is the author of Five Myths About Nuclear Weapons (2012). Wilson has contributed to The Bulletin of the Atomic Scientists, Joint Force Quarterly, the New York Times, and International Security, among others, and has spoken widely. ward@rethinkingnuclearweapons.org

ROUNDTABLE: The International Rule of Law

Rosa Brooks is professor of law at Georgetown University, a Fellow at the New America Foundation, and a weekly columnist for Foreign Policy magazine. From 2009 to 2011, Brooks served as Counselor to the U.S. Under-Secretary of Defense for Policy. From 2001 to 2006 she was an associate professor of law at the University of Virginia, and from 2005 to 2009 she wrote a weekly op-ed column for the Los Angeles Times. Brooks is the author (with Jane Stromseth and David Wippman) of Can Might Make Rights? Building the Rule of Law after Military Interventions (2006). Her next book, By Other Means: How Everything Became War and the Military Became Everything, will appear in 2015. rosa.brooks@law.georgetown.edu

David Dyzenhaus is professor of law and philosophy at the University of Toronto. He is the author of Hard Cases in Wicked Legal Systems: South African Law in the Perspective of Legal Philosophy (1991, second edition as Hard Cases in Wicked Legal Systems: Pathologies of Legality, 2010); The Constitution of Law: Legality in a Time of Emergency (2006); Judging the Judges, Judging Ourselves: Truth, Reconciliation and the Apartheid Legal Order (1998); and Legality and Legitimacy: Carl Schmitt, Hans Kelsen, and Hermann Heller in Weimar (1997). david.dyzenhaus@utoronto.ca

Ian Hurd is associate professor of political science at Northwestern University. He has written extensively about the politics of international law and international institutions. His work has appeared in leading academic and public policy journals, including International Organization, Foreign Affairs, International Politics, Global Governance, and Ethics & International Affairs. His book on the UN Security Council, After Anarchy: Legitimacy and Power in the UN Security Council (2007), won the Chadwick Alger Award from the International Studies Association and the Myres McDougal Prize from the Policy Sciences Society. His most recent book is International Organizations: Politics, Law, Practice, which appeared in a second edition in 2014. Hurd has been a visiting scholar at the Woodrow Wilson School at Princeton University, Sciences-Po in Paris, and the WZB Berlin Social Science Center, among other institutions, and is a frequent contributor to public debates on global affairs, foreign policy, and international law. His current work includes a book on the international rule of law, and he is a co-editor of the forthcoming Oxford Handbook of International Organizations. ianhurd@northwestern.edu

Christian Reus-Smit is a Fellow of the Academy of the Social Sciences in Australia and professor of international relations at the University of Queensland. Among his books are Individual Rights and the Making of the International System (2013); American Power and World Order (2004); The Moral Purpose of the State (1999); and (as co-author) Special Responsibilities: Global Problems and American Power (2012). Reus-Smit is editor of The Politics of International Law (2004) and co-editor of The Oxford Handbook of International Relations (2008). c.reussmit@uq.edu.au

Ruti Teitel is the Ernst C. Stiefel Professor of Comparative Law, New York Law School; Visiting Fellow, London School of Economics; and an affiliated visiting professor at Hebrew University of Jerusalem. She is the author of Transitional Justice (2000) and many articles and book chapters on international and comparative law, often focusing on political transitions. Her latest work is Humanity's Law (2012), which aims to set out a paradigm shift in international affairs. She is the founding co-chair of the American Society of International Law Interest Group on Transitional Justice and Rule of Law, a life member of the Council on Foreign Relations, and a member of the ILA International Human Rights Law Committee. For 2012–2013, Teitel was a Straus Fellow-in-Residence at New York University Law School's Straus Institute for the Advanced Study of Law and Justice. rteitel@nyls.edu

ROUNDTABLE: The Future of Human Rights

Philip Alston is John Norton Pomeroy Professor of Law at New York University Law School, and co-chair of its Center for Human Rights and Global Justice. He was UN Special Rapporteur on extrajudicial executions (2004–2010); Chairperson of the UN Committee on Economic, Social, and Cultural Rights (1991–1998); Independent Expert on reform of the UN human rights treaty body system (1989–1997); Special Advisor to the UN High Commissioner for Human Rights on the Millennium Development Goals (2004–2007); a member of the UN Group of Experts on Darfur, and a participant in the Independent International Commission on Kyrgyzstan. Alston also served as editor-in-chief of the European Journal of International Law from 1996 to 2007. philip.alston@nyu.edu

Jack Donnelly is Andrew Mellon Professor and John Evans Professor at the University of Denver's Josef Korbel School of International Studies. He received his doctorate degree from the University of California, Berkeley. Professor Donnelly is the author of Universal Human Rights in Theory and Practice (2013, 3rd ed.) and International Human Rights (2012, 4th ed.), both prominent works in the field. His current work focuses on cross-cultural conceptions of human dignity across history and on structural theories of international relations. jack.donnelly@du.edu

Andrew Gilmour is Director in the Secretary-General's Office for Political, Peacekeeping, Humanitarian, and Human Rights. He previously served as the UN Representative of the Secretary-General in Serbia (2009–2011), as well as Deputy Special Representative of the Secretary-General (Political) for the UN Mission in South Sudan and the UN Assistance Mission in Iraq. He has written for a number of publications, including The Times (London), Middle East International, and The Spectator. gilmour@un.org

James W. Nickel is professor of philosophy and law at the University of Miami, where he teaches and writes on human rights law and theory, jurisprudence, and political philosophy. He is the author of Making Sense of Human Rights (2007, 2nd ed.) and many essays in philosophy and law. Recent articles include “Goals and Rights—Working Together?” in Malcolm Langford et al., The MDGs and Human Rights: Past, Present, and Future (2013); “Restraining Orders, Liberty, and Due Process,” in Andrew Ashworth and Lucia Zedner, eds., Prevention and the Limits of the Criminal Law (2013); and “Rethinking Indivisibility: Towards a Theory of Supporting Relations between Human Rights,” in Human Rights Quarterly (2008). nickel@law.miami.edu

Beth A. Simmons is Clarence Dillon Professor of International Affairs in the Department of Government at Harvard University. She is best known for her research on international political economy during the interwar years and on policy diffusion globally, as well as her work demonstrating the influence that international law has on human rights outcomes around the world. Simmons has directed the Weatherhead Center for International Affairs at Harvard, is a past president of the International Studies Association, and has been elected to the National Academy of Sciences and the American Academy of Arts and Sciences. bsimmons@wcfia.harvard.edu

ROUNDTABLE: The Facts, Fictions, and Future of Climate Change

Stephen M. Gardiner is professor of philosophy and Ben Rabinowitz Endowed Professor of Human Dimensions of the Environment at the University of Washington, Seattle. His research focuses on global environmental problems (especially climate change), future generations, and virtue ethics. He is the author of A Perfect Moral Storm: The Ethical Tragedy of Climate Change (2011), the coordinating co-editor of Climate Ethics: Essential Readings (2010), and the editor of Virtue Ethics: Old and New (2005). His articles have appeared in such journals as Ethics, Journal of Political Philosophy, Oxford Studies in Ancient Philosophy, and Philosophy & Public Affairs. smgard@u.washington.edu

Clive Hamilton is a public intellectual and writer, and the author of a number of best-selling books, including Growth Fetish (2004) and Affluenza (2014). He has written four books on climate change, most recently Earthmasters: The Dawn of the Age of Climate Engineering (2014) and Requiem for a Species: Why We Resist the Truth about Climate Change (2010). Hamilton was the founder and for fourteen years the executive director of the Australia Institute, the nation's leading progressive think tank. He is currently Professor of Public Ethics at Charles Sturt University in Canberra. He has held various visiting academic positions, including at Yale, Sciences Po, and Oxford. mail@clivehamilton.com

Thomas E. Lovejoy is University Professor of Environmental Science at George Mason University and has worked on the interaction of climate change and biodiversity since the mid-1980s. He is now working on his third book on the subject, together with Lee Hannah of University of California, Santa Barbara, and Conservation International (his second book with Dr. Hannah). He is an ecologist and conservation biologist who coined the now ubiquitous term “biological diversity.” He served in advisory capacities in the Reagan, George H. W. Bush, and Clinton administrations. Most recently he chaired the Scientific Technical Advisory Panel for the Global Environment Facility. tlovejoy@unfoundation.org

Daniel Mittler is Political Director of Greenpeace International. Based in Berlin, he leads a global team of specialists advising Greenpeace on political and corporate strategies. He has been an active advocate at the global climate negotiations for fifteen years and has led Greenpeace delegations to many global forums—from the World Trade Organization to the Group of 8. He writes mainly on NGO strategy, climate politics, and corporate accountability. His writings can be found at www.greendaniel.blogspot.com. dmittler@greenpeace.org

Clare Palmer is professor of philosophy at Texas A&M University. She was awarded a BA(Honors) and a D.Phil from Oxford University, and has held academic positions at universities in the United Kingdom, Australia, and the United States. She is the author of three books, most recently Animal Ethics in Context (2010), and is currently completing a co-authored book on ethics and companion animals. She held the position of President of the International Society for Environmental Ethics from 2007 to 2010, and serves on the editorial board of several journals, including Environmental Values, Agricultural and Environmental Ethics, and Environmental Humanities. c.palmer@tamu.edu

Scott Russell Sanders is the author of twenty books of fiction and nonfiction, including Hunting for Hope (1999), Earth Works (2012), and Divine Animal (2014). Among his honors are the Lannan Literary Award, the John Burroughs Essay Award, the Mark Twain Award, the Cecil Woods Award for Nonfiction, and fellowships from the Guggenheim Foundation and the National Endowment for the Arts. In 2012 he was elected to the American Academy of Arts and Sciences. He is a Distinguished Professor Emeritus of English at Indiana University. scott@scottrussellsanders.com

Paul Wapner is professor of global environmental politics in the School of International Service at American University. He is the author of Living through the End of Nature: The Future of American Environmentalism (2010) and Environmental Activism and World Civic Politics (1996). He is also co-editor (with Lester Ruiz) of Principled World Politics: The Challenge of Normative International Relations (2000) and (with Simon Nicholson) of Global Environmental Politics: From Person to Planet (2014). His most recent research project focuses on climate suffering. pwapner@american.edu