The Burma part of the 1914 McMahon Line, which demarcated the border between British India and Tibet, runs from Diphu Pass to the Isu Razi Pass.

[1] In October 1960, China and Burma (now Myanmar) demarcated their border to Diphu Pass, which is 8 kilometres (5.0 miles) south of the watershed of the mountain ranges.

However, this caused a diplomatic row with India, which expected the tri-point to be at the watershed.

[2][3] The dispute has become part of the ongoing border disagreement between China and India regarding Arunachal Pradesh.

Kaho on LAC is 40 km west of Diphu Pass.