Insights on what specifically? The main point of contention is that India believes the Pakistani state to be aiding terrorists in Kashmir. I personally think this is true in general. Can't say for specific attack itself but its not unlikely. India started escalating against Pakistan after the attack. The potential breaking of this water treaty is a part of that. Pakistan has retaliated too. They have closed off their airspace to Indian aircrafts. I think trade relations have been halted too and all the bilateral agreements are on the chopping block.

India is probably seeing this as a good pretext to increase military presence in Kashmir. I hope there isn't war and bloodshed. There is too much of that going around already.