Nuclear weapon states don't go to direct war with each other. US for all its power chooses to talk with North Korea, primarily because of its nuclear capabilities. This is the established military doctrine of post world war. Pakistan can be punished by India by many ways without resorting to war. Punishment through war is an outdated strategy. Btw, breaking up Pakistan without direct war isn't a big deal.. all we need to get is diplomatic nod from certain Key countries. Why not work towards that?
