When Jeane J. Kirkpatrick died in December 2006, she left behind more than her legacy as a "heroine of conservatives." She had just completed work on this extraordinary survey of American foreign policy in the post-Cold War age: a bold and revisionist assessment of two decades of American interventions abroad--a troubled period of small successes, tragic failures, and important lessons for our future. Since the end of the Cold War, Kirkpatrick argues,...