The Chief Minister of the Indian state of Arunachal Pradesh (AP), Pema Khandu, has taken the unusual step of referring to the “Indo-Tibetan” border, a description likely to irk Beijing. Khandu was commending the valour of Indian troops when he tweeted details of his meeting “with the brave jawans today at Bumla post on the Indo-Tibet border”. China claims AP itself,protesting when the state is visited by Indian officials.