From the end of the Cold War to the terrorist attacks on the United States in September 2001, the NATO Alliance has changed profoundly. This book explores the multifaceted consequences of NATO's adjustment to new international and domestic political and security realities. Internal Alliance politics and matters of relative power within the membership have strongly influenced recent NATO developments. Several major issues challenging the Alliance are examined, including how the impact of efforts to develop an enhanced common European security and defense policy have affected NATO: whether missile defense is driving the United States and its European allies closer or further apart; how the experience of NATO in the Balkans and elsewhere brought alliance members together or made MATO cohesion more difficult to maintain; and in what way the changing role of NATO has influenced American and Canadian participation in the Alliance. An important guidepost to pivotal changes and likely NATO developments, scholars and policymakers of Atlantic and international politics will find these meditations indispensable.A number of authors also speculate on the likely changes for the alliance that will ensue in the wake of the September 11 terrorist attacks, and the possibility that NATO will soon modify its mission and responsibilities in reaction to the threat of international terrorism. Indeed many of the same strategies and strains that affected NATO cohesion over the past decade are likely to complicate efforts to maintain Alliance unity as part of the anti-terrorist coalition.