So your are calling your leaders what? Stupid.
They did not made a mistake, infact they knew that the territory was disputed and needs a solution and hence took it to the UN.
Also the struggle that initiated in the valley was home grown give credit to the Indian army for that which crossed all limits of human rights violations inside Kashmir and even to this date is. We only supported such movement and it was all natrual for us to do so because India was not willing to sit on the table to negotiate and settle the dispute. So what other option was there left if not military struggle?
Also as for dall na galna, dude if this policy would have been consistent, defiantely, dall na gall jana tha,
it was the leadership faliure that kept it from achieving its goals.