Sino-Indian War - Wikipedia

The Sino-Indian wars are still alive today at Doklam, between Sikkim and Bhutan. The Chinese claim a large chunk of Arunachal by treating the McMahon Line as its southern border, which India doesn't recognize. In Kashmir, the McCartney-Macdonald Line of 1899 is used by India as its northeastern border with China in the Kashmir Valley. There is also the Radcliffe Line that separates India and Pakistan. These lines are all imaginary and not fixed or complete.