Indian military commanders only have two real options with Kashmir. Annihilate the population culturally, or annihilate the population physically. Only one would provoke an immediate military response from Pakistan, the alternative I imagine is one they could secretly secure Chinese support for, while claiming the Americans are providing them the material support to enact it. I say this because, much like the Nazi's, the Chinese have taken solid cues from the British regarding forced/concentration camps, but applied Chinese characteristics. I think the Indians can retake the region completely, but for them it will still require using the population as a buffer against Pakistan indefinitely.