Now in its second edition, Fifty Key Thinkers in International Relations has been thoroughly updated with several new entries and a new preface to reflect the latest developments. There are new sections on Constructivism, International Political Theory, and English School, as well as a range of new thinkers. They include:

• Samuel Huntington
• Christine Sylvester
• J rgen Habermas
• John Rawls
• Barry Buzan

Martin Griffiths is Associate Professor in the School of Political and International Studies at Flinders University, Australia. He is the author of International Relations Theory for the 21st Century (2007), Realism, Idealism, and International Politics (1995), and co-author (with Terry O'Callaghan and Steven C. Roach) of International Relations: The Key Concepts. Second Edition (2007), all available from Routledge.

Steven C. Roach is Assistant Professor of International Affairs in the Department of Government and International Affairs at the University of South Florida. Among his books are Critical Theory of International Politics (Routledge, forthcoming), Governance, Order, and the International Criminal Court (2009), Critical Theory and International Relations: A Reader (Routledge, 2007), and Politicizing the International Criminal Court (2006).

M. Scott Solomon is Assistant Professor of International Affairs in the Department of Government and International Affairs at the University of South Florida. He is the co-author (with Mark Rupert) of Globalization and International Political Economy: The Politics of Alternative Futures (2006).

Preface to the Second Edition, Realism, Liberalism, Constructivism, Critical Theory, English School, Postmodernism, Feminism, International Political Theory/International Ethics, Historical Sociology, Index