The Sino-Indian Border War of 1962 forms a major landmark in South Asian, Asian and Cold War history. Among others, it resulted in an unresolved conflict permanently hindering rapprochement between China and India, the establishment of the Sino-Pakistani axis, the deepening of the Sino-Soviet split and had a lasting impact on Indian domestic affairs. This book draws on new documentary evidence to re-evaluate perceptions, motivations and decision-making processes of both antagonists, but also of third powers immediately affected by the conflict. It also investigates the effect on India's internal politics, its Constitution, the Communist Party of India and the fate of Indians of Chinese origin.