From UPSC perspective, the following things are important :
Prelims level : Depsang Plain and its location
Mains level : India-China border skirmishes and their impacts on bilateral relations
Reports of a heavy Chinese presence at Depsang, an area at a crucial dip (called the Bulge) on the Line of Actual Control (LAC) have increased the recent tensions between Indian and Chinese troops.
For the Depsang Plain, a prelim based question is hardly possible. However one must know all the fronts of border disputes from mains perspective.
- The “Depsang Plain” is one of the few places in the Western Sector where light armour (vehicles) would have ease of manoeuvre, so any Chinese buildup there is a cause for concern.
- India controls the western portion of the plains as part of Ladakh, whereas the eastern portion is part of the Aksai Chin region, which is controlled by China and claimed by India.
- The buildup invokes memories of both the 1962 war, when Chinese troops had occupied all of the Depsang plains.
- More recently in April 2013, the PLA crossed the LAC and pitched tents on the Indian side for three weeks, before they agreed to pull out.