The India-China border is a long and complex boundary that stretches over 3,400 kilometers, separating the two countries. It runs through various terrains, including the Himalayas, and is marked by several disputed areas, notably in Aksai Chin and Arunachal Pradesh. This border has been a source of tension between India and China, leading to conflicts such as the 1962 Sino-Indian War. Both nations have engaged in talks to resolve their differences, but the situation remains sensitive, with military presence on both sides to assert their claims.