One of the greatest challenges facing the United States today is the translation of its overwhelming might into effective influence. Traditionally, the United States has leveraged its power through bilateral and multilateral alliances. However, the end of the Cold War and the events of September 11, 2001, have led some policymakers and analysts to question the value of alliances in American foreign and defense policy. This monograph by Dr. Elizabeth Sherwood- Randall, one of the nation's leading specialists on alliance politics, makes the case that allies are more important than ever to the achievement of U.S. national security goals. She argues that existing American alliances need to be modernized and strengthened, and that new alliances should be established. She also stresses the value of peacetime security cooperation, which builds partnerships that may become alliances. Dr. Sherwood-Randall describes the need to evolve the concept of alliances...