The chapters in this volume analyze the international and domestic sources of foreign policy making for the superpowers and China during the critical cold war years of the 1 970s and 1980s. This was a period characterized by dramatic and fundamental changes in international relations. It witnessed first the blossoming and then the collapse of U.S.-Soviet detente; the depths of Sino-Soviet conflict, including a war and a Soviet nuclear threat against China, and the fulfillment of Sino-Soviet rapprochement in the midst of the Beijing democracy movement; and the drama of U.S.-Chinese rapprochement, the development of U.S.-Chinese economic and cultural ties, and the ultimate demise of U.S.- Chinese cooperation in the bloodied streets of Beijing. All of these developments occurred while war raged in Indochina between Americans and Vietnamese and then among Vietnamese, Cambodians, and Chinese. They also occurred against the backdrop of dramatic domestic developments within these countries-the resignation of Richard Nixon, the reign and death of Mao Zedong and the rise of Deng Xiaoping, and the succession to Leonid Brezhnev and the emergence of Mikhail Gorbachev. The era came to a dramatic conclusion when relations among Washington, Moscow, and Beijing again transformed. By 1989 the cold war had ended and the Communist world had collapsed, and China was estranged from both the Soviet Union and the United States.