Robyn Eckersley is Professor and Head of the Political Science Program in the School of Social and Political Sciences, University of Melbourne, where she researches and teaches in the areas of environmental politics, political theory, and international relations. Her major publications include Environmentalism and Political Theory: Toward an Ecocentric Approach (1992); Markets, the State, and the Environment: Towards Integration (editor, 1995); The Green State: Rethinking Democracy and Sovereignty (2004); The State and the Global Ecological Crisis (coedited with John Barry, 2005); and Political Theory and the Ecological Challenge (coedited with Andrew Dobson, 2006). Prof. Eckersley serves on the Editorial Board of Ethics & International Affairs.

Meri Koivusalo is Senior Researcher on Health Policy at the National Institute for Health and Welfare, Helsinki, Finland. She has published on national, European, and global health and social policy, and served as coeditor of Global Social Policy from 2005 to 2010. She is the coauthor (with Eeva Ollila) of Making a Healthy World: Agencies, Actors and Policies in International Health (1997), and (with Jonathan Tritter, Eeva Ollila, and Paul Dorfman) of Globalisation, Markets and Healthcare Policy: Redrawing the Patient as Consumer (2009).

Edward C. Luck is Senior Vice President for Research and Programs at the International Peace Institute and Special Adviser to the UN Secretary-General, with the rank of Assistant Secretary-General, in which capacity he primarily focuses on the responsibility to protect. From 2001 to 2010, Dr. Luck was Professor of Practice in International and Public Affairs and Director of the Center on International Organization, both of Columbia University. A past President and CEO of the United Nations Association of the USA, he has served the UN in a variety of capacities, taught at Princeton and Sciences-Po (Paris), and founded a research center cosponsored by the NYU School of Law and Princeton's Woodrow Wilson School. Among his books are UN Security Council: Practice and Promise (2006), International Law and Organization: Closing the Compliance Gap (with Michael Doyle, 2004), and Mixed Messages: American Politics and International Organization, 1919–1999 (1999).

Jennifer Welsh is Professor of International Relations and a Fellow of Somerville College at the University of Oxford. She is the author of At Home in the World: Canada's Global Vision for the 21st Century (2004), Edmund Burke and International Relations (1995), and a forthcoming book on sovereignty as responsibility. Her edited volumes include The United Nations Security Council and War: The Evolution of Thought and Practice Since 1945 (with Vaughan Lowe, Adam Roberts, and Dominik Zaum, 2008), and Humanitarian Intervention and International Relations (2004). She is the codirector of the Oxford Institute for Ethics, Law, and Armed Conflict, where she currently directs a project on the prevention of mass atrocities.