Eastern Ladakh/Aksai Chin is a Himalayan Region.
It is administered by China since they won the 1962 Sino-Indian war. However, it is claimed by India as a part of the Union Territory of Ladakh (within the erstwhile Jammu and Kashmir state). Pakistan also claims J&K's territory.
What's the position of Pakistan on the Eastern Ladakh/Aksai Chin issue? Do they claim that region as well, or they support the Chinese administration?