The fools in India and Pakistan have no idea of the horrific devastation even one nuke will do to both sides. To tell their people to put aside water and food for a couple weeks is absolutely absurd. Just look at what Japan looked like after tiny nukes were dropped ending WWII. Devastation as far as the eye could see. Lethal radioactivity. Firestorns day and night. Sure fellas, go ahead, nuke each other....good luck with that.
Fools with an impotent understanding of geography would do well to remedy that deficit.
Kashmir is a large, Texas-sized state in India with the terrain containing the width of the Greater Himalayas. The advice was not meant for people at Ground Zero, but the surrounding areas which will suffer limited damage only, due to the terrain.
What will happen in the aftermath of a nuclear explosion there (tactical nukes, at that, on military formations) is the cut-off of logistics when the entire state becomes militarized to mobilise a full-scale war effort. In that situation, shelters and stored food become vital.
As for the nukes themselves, it’s the best investment India made, considering its neighbours. Countries which aided and enabled rogue states (like China and Pakistan), America being right up there, are the bigger fools. They sold them the proverbial rope they will end up being hanged with...