For decades Pakistan was demanding UN intervention and a plebiscite in Kashmir. It sought mediation on resolving the Kashmir issue. Pakistan also changed its terminology on Kashmir from Indian Occupied Kashmir (IOK) to Indian Occupied Jammu and Kashmir (IOJK).
For Pakistan, Article 370, included in the Constitution, well after the UN resolution, meant nothing. They have exploited it as the basis of ensuring the Muslim majority status of the valley. Pakistan conned President Trump into stating that Prime Minister Modi had requested him to mediate. The US state department deleted all references of mediation in its official release and have stood by India’s views of Kashmir being a bilateral issue. However, Pakistan continued to gloat about Trump’s comment.
China, Pakistan’s permanent ally, stated in an editorial in the Global Times, mouthpiece of the Chinese communist party, after the visit of Imran Khan to the US that it supports the US in wanting to mediate in Kashmir. Read more