For a start let's open up the issue of the Shaksgam Valley with China. After the 1962 War, Ayub realizing that the Chinese would take it either way quietly 'leased' it to the PRC. Wording of the lease itself acknowledges it to be Indian territory. Selling stolen goods is a crime!

This is straightfwd case. Karakoram Highway to China linked through the Shaksgam Valley which is north of the Siachen Glacier. India needs to get back what belongs to her. China also says its ours. So light the fire under their butt. As stated mechanism for dialogues are in place

Today we are arguing about Chinese Claim Lines in Ladakh, which they changed thrice by the way. The original border maps prior to 1956 were never in dispute till unilaterally changed by PRC as part of their catographic aggression. Chou en Lai himself dismissed them as nonsense!