In 1961 China and Pakistan agreed in principle to demarcate their common border; negotiations commenced the following year, with the final Sino-Pakistan Agreement being signed in 1963.

According to the map of the Pakistan side, the boundary line from the confluence of the above-mentioned two rivers ascends the crest of a corresponding spur and runs along it; passing through Height 6,520 metres (21,300 feet) till it joins the Karakoram Range main watershed at a peak (reference co-ordinates approximately Longitude 75° 57' E. and Latitude 36° 03' N.).

Pakistan maintains a territorial claim on the Indian-administered region of Ladakh (formerly a part of the Jammu and Kashmir state), which shares a border with China (see also: Line of Actual Control).

The political map used by the Pakistani government annotates Ladakh's boundary with China as "frontier undefined", whose status would be formalised by "the sovereign authorities concerned after the settlement of the Jammu and Kashmir dispute.

India refuses to recognise the legality of the 1963 Sino-Pakistan treaty or the cession of the Trans-Karakorum Tract (Shaksgam Valley) to China, a position further complicated by the fact that large sections of the rest of the China-India boundary are also disputed.