A teacher, scholar, practitioner, and publicist, Richard Ullman has been a unique and influential figure in U.S. foreign and security policy over the past forty years. This volume, created on the initiative of some of Ullman's most accomplished former students, is less a summing up of his work than a sort of intellectual kaleidoscope held up to his ideas. The result is a spirited and highly readable set of essays on themes relating to U.S. foreign and defense policy in a period of nearly unprecedented dynamism in the international system. The volume includes contributions by David Gompert, I.M. Destler, Michael Doyle, Michael O'Hanlon, and eight other distinguished scholars and practitioners of international relations. A Council on Foreign Relations book.