Morris examines the, "first and only extended war between two communist regimes."

Vietnamese collection.

Introduction: international relations, rationality, and Marxist-Leninist political cultures -- Local genesis of the conflict. Roots of a conflict: the Vietnamese communists and the Cambodians, 1930-70 ; Public rise and secret fall of "militant solidarity": Vietnamese and Cambodian Communists, 1970-75 ; The foreign policy of democratic Kampuchea, 1975-78 ; The public disintegration of "militant solidarity" in Indochina: Vietnam and Cambodia, 1975-78 ; The internationalization of a conflict. Vietnam and the communist world, 1930-68 ; North Vietnam's tilt toward the Soviet Union, 1968-75 ; The collapse of Vietnamese-Chinese relations ; The emergence of the Soviet-Vietnamese alliance ; The consequences of the Vietnamese invasion.