You think India can not withstand the consequences of withdrawing from Indus water treaty?
Indus water treaty was signed, by overgnerous Nehru in a bid to allay Pakistan's water fears to avoid another war over Kashmir.
But it did not work, did it.
Pakistan nonetheless declared war in Kashmir a mere 5 years after signing the treaty.
Now India wants to renegotiate this treaty, based on today's needs and realities
If Pakistan will not negotiate, then fine, we will withdraw from treaty.
Then Pakistan can do what ever it wants.