Kirsten Ainley is Lecturer in International Relations at the London School of Economics. Her research focuses on the history and development of international criminal law, international political theory, human rights, and humanitarian intervention. She is the author (with Chris Brown) of Understanding International Relations (2009). K.A.Ainley@lse.ac.uk

Daniele Archibugi is Research Director at the Italian National Research Council, and Professor of Innovation, Governance, and Public Policy at the University of London, Birkbeck College. He works on the economics and politics of technological change and on the political theory of international relations. Professor Archibugi has taught at the University of Sussex, where he was appointed Honorary Professor in 2006; Cambridge University; the London School of Economics; and Harvard. He is an adviser to the European Union, the Organisation for Economic Co-operation and Development, several UN agencies, and various national governments. He has led many research projects for the European Commission and other international organizations. He is the coeditor of Cosmopolitan Democracy (with David Held, 1995), Re-imagining Political Community (with David Held and Martin Kohler, 1998), Filosofi per la pace (with Franco Voltaggio, 1999), and the editor of Debating Cosmopolitics (2003). His book The Global Commonwealth of Citizens: Toward Cosmopolitan Democracy (2008) has been translated into several languages. His latest coedited book (with Mathias Koenig-Archibugi and Raffaele Marchetti) is Global Democracy: Normative and Empirical Perspectives (2011). daniele.archibugi@cnr.it

Stephen Guest is Professor of Legal Philosophy at University College London and a barrister of the Inner Temple, London. With Ronald Dworkin he cochaired the internationally well-known annual Colloquium in Legal and Social Philosophy at UCL from 1999 to 2006, and was British Academy/Leverhulme Senior Research Fellow for 2006–2007. He writes primarily on legal and political philosophy, particularly concerning the question of justification in legal reasoning and the relationship between justice, interpretation, and laws. The third edition of his book Ronald Dworkin will be published by Stanford University Press in early 2012. s.guest@ucl.ac.uk

David Held holds the Graham Wallas Chair in Political Science at the London School of Economics. His publications include Democracy and the Global Order: From the Modern State to Cosmopolitan Governance (1995), Global Transformations: Politics, Economics, and Culture (1999), Global Covenant (2004), Globalisation/Anti-Globalisation (2007), Models of Democracy (2006), and Cosmopolitanism: Ideals and Realities (2010). His main research interests include the study of globalization, changing forms of democracy, and the prospects of regional and global governance. He is a Director of Polity Press, which he cofounded in 1984, and General Editor of Global Policy. D.Held@lse.ac.uk

Shashi Tharoor is an elected Member of Parliament and former Minister of State for External Affairs, India, and a former UN Under-Secretary-General. He is the prize-winning author of twelve books, both fiction and nonfiction, including The Great Indian Novel (1989), India: From Midnight to the Millennium (1997), Nehru: The Invention of India (2003), and The Elephant, the Tiger, and the Cell Phone: Reflections on India—the Emerging 21st-Century Power (2007). A widely published critic, commentator, and columnist (including for the Hindu, the Times of India, and Newsweek), Mr. Tharoor served the United Nations for twenty-nine years in refugee work, peacekeeping, the office of the Secretary-General, and heading communications and public information. In 2006 he was India's candidate to succeed Kofi Annan as UN Secretary-General. He has won India's highest honor for overseas Indians, the Pravasi Bharatiya Samman, and numerous literary awards, including a Commonwealth Writers' Prize. For more information, please see www.tharoor.in. office@tharoor.in