With the end of the Cold War, the security concerns of the USA, the sole Superpower in the new international order, became fragmented and proliferated throughout the world. Since September 11 2001 and the war in Iraq, the US has had to evaluate new global developments in terms of the threats they pose to regional and global stability. The nature of the potential enemy is difficult to anticipate. United States Post-Cold War Defence Interests gathers together seasoned analysts to examine traditional military concerns and responses to the new environment.