‘Towards ‘‘Hot War’’ in Asia, 1945–50’ examines the geopolitical changes in South East Asia following World War II. Japan was left politically impotent under US control after losing the war, while China emerged as a second major communist power — much to the dismay of US policy makers, who now feared Eurasian communist hegemony. This fear motivated the Americans to send troops to Korea in order to contain the threat of communist expansion. However, an ill-fated decision to cross the 38th Parallel caused the Chinese to enter the war, escalating the conflict. The war lasted three years and cost hundreds of thousands of lives, eventually ending in 1953.