This ambitious volume addresses fundamental questions about America's future: What are the country's vital interests? What is America's place in the post-Cold War world? How is security to be defined and defended as old threats disappear and new ones materialize? Allison and Treverton offer a useful deductive paradigm for answering these questions. Starting with a reexamination of what national security means in the post-Cold War world, the volume moves to an assessment of national security's various dimensions, then presents several contending visions of the new international order and concludes with a topical look at the U.S. stake in various regional problems. The essays offer an illuminating array of views from Peter Peterson's advice to focus on domestic problems to Charles Krauthammer's exhortation to seize the "unipolar moment." The book brings structure and coherence to the debate about national security in a world transformed.