This chapter examines the United States’ relations with China and other countries in Asia. It considers how a region wracked by insurgencies and wars for almost forty years was transformed from being one of the most disturbed and contested in the second half of the twentieth century, into becoming one of the more stable and prosperous by century’s end. The chapter begins with a discussion of the United States’ relations with Japan and then with China and Korea. It shows that at the end of the Cold War in Europe, hostility continued in the Korean peninsula, and that North Korea has consciously used nuclear weapons as a bargaining chip in order to ensure the survival of the regime. The chapter concludes by assessing the outlook for the Asia-Pacific region and future prospects for American hegemony in East Asia.