China and India shared a long border, sectioned into three stretches by Nepal, Sikkim (then an Indian protectorate), and Bhutan, which follows the Himalayas between Burma and what was then West Pakistan. A number of disputed regions lie along this border. At its western end is the Aksai Chin region, an area the size of Switzerland, that sits between the Chinese autonomous region of Xinjiang and Tibet (which China declared as an autonomous region in 1965). The eastern border, between Burma and Bhutan, comprises the present Indian state of Arunachal Pradesh (formerly the North-East Frontier Agency). Both of these regions were overrun by China in the 1962 conflict.