India shares a 3,488 kilometer long border with China. This border borders Ladakh, Himachal Pradesh, Uttarakhand, Sikkim and Arunachal Pradesh and is divided into three sectors. These include the western sector i.e. Ladakh, the middle sector i.e. Himachal Pradesh and Uttarakhand, and the eastern sector i.e. Sikkim and Arunachal Pradesh.
