The Sino-Indian War was a conflict between China and India that occurred in 1962. The war was primarily over territorial disputes in the Aksai Chin region and the Northeast Frontier Agency (now Arunachal Pradesh). Tensions escalated due to differing perceptions of the border, leading to military confrontations. The war lasted for about a month, from October to November 1962, resulting in a decisive victory for China. Following the conflict, both countries engaged in diplomatic efforts to resolve their differences, but the border issues remain a point of contention to this day.