Disproportionate Retribution

So the Israeli troops have made a ground incursion into Gaza to get rid of Hamas. One of the top commanders of Hamas have been taken out in the earlier air-strikes.
This has been Israel's dis-proportionate response to the dozen odd people killed in rocket attacks made by the terrorist organization by the name of Hamas. It is anyone's guess how many more Palestinians are going to be steam-rolled in the new offensive in the name of "defense of Israel".
One of the most unthinkable but doomsday scenario aspects is that Israel's disproportionate response every time to each act of terror is aimed at, according to Israel, aimed at shutting the other side up for a while, but could very easily back-fire in the kind of radicalization and polarization of the non-Arab countries against it. To expect any friends of Israel in the Arab world would be insane. However the over-the-top reaction is not winning it any sympathy in Europe and other countries with minority Islamic populations.
Coming back to the doomsday scenario I was talking about. Its always possible that the only Islamic country with nuclear weapons - Pakistan - would and could support the detonation of a dirty-bomb on Israeli soil. However, if the Pakistanis had anything they would already have forked it out to their jehadi brothers in Palestine. Detonation of a dirty bomb would definitely leave its fingerprints which would be almost impossible to get rid of - However if the same were to be used against a neighboring nation - say India, in the event of a conventional war, it would be justified in the name of self-defense - the same illogical reason used by Israel. For the same reason the detonation of a nuclear dirty bomb would most probably never happen on Indian soil, because that would mean an almost immediate response from India, and if there is mobilization prior to this by Pakistan to save itself, India's ears would be up for a possible act of war.
There is every possibility that nuclear weapons, if at all they are in any sense of maturity level for delivery, would be used against India - in fact they would probably throw everything including the kitchen sink against their neighbor, very well risking complete annihilation. That's their doctrine, its not the no-first-use as purpotedly espoused by Zardari on TV.