For India, the Chinese incursion also threatens its access to the 6,300-meter-high Siachen Glacier, to the west of Depsang. Pakistan claims the Indian-controlled glacier, which, strategically wedged between the Pakistani- and Chinese-held parts of Kashmir, served as the world’s highest and coldest battleground (and one of the bloodiest) from the mid-1980’s until a cease-fire took effect in 2003.