Michael Walzer is currently Permanent Faculty Member, Emeritus at the Institute for Advanced Study in Princeton, New Jersey. He has written about a wide variety of topics in political theory and moral philosophy: political obligation, just and unjust war (his book, Just and Unjust Wars, is among the seminal texts on the subject), nationalism and ethnicity, economic justice and the welfare state. Professor Walzer has played a part in the revival of a practical, issue-focused ethics and in the development of a pluralist approach to political and moral life. He is currently working on the toleration and accommodation of “difference” in all its forms and also on a (collaborative) project focused on the history of Jewish political thought.