China was forced to back off three kilometres from Cho La Pass located north of Nathu La. It is our understanding that a Royal Bhutan Army patrol attempted to dissuade them from this unilateral activity. This displaces the tri-junction between Sikkim, Bhutan and Tibet about 15 km on either side. It overlooks the Chumbi valley which has two important passes - Nathu La and Jelep La - to connect India and China. India and China reached an agreement in 2012 that the tri-junction boundary points (at Doko La) between India, China and third countries would be settled in consultation with the concerned parties.

Source: India Today July 01, 2017 12:26 UTC