Pakistan is too tiny to think even as threat. Pakistan won't even survive for a day, When India retaliates with full power. In Nuke, Game will be over in an hour.
If China attacks India, Then we will reply. If they don't then we won't indulge or initiate anything.
Today Kashmir denotes a larger area that includes the Indian-administered state of Jammu and Kashmir (the Kashmir valley, Jammu and Ladakh), the Pakistani-administered Gilgit-Baltistan and the Azad Kashmir provinces, and the Chinese-administered regions of Aksai Chin and Trans-Karakoram Tract.
That would never have happened if India is as strong as you believe it to be.

