The United States today straddles the stage of global politics without any equal competitor. How will it use its great power? Will it turn inward toward isolationism? Will it accept voluntary constraints by allies in multilateral arrangements? Will it act globally, but unilaterally, without consultation?A group of distinguished proponents of these diverse views, including noted historian Arthur M. Schlesinger Jr., debate their differences in this collection of essays. Central issues in their debate are whether isolationism is the same as unilateralism, and the degree to which American political culture feels itself to be part of, or distinct from, an emergent global civil society.