[Ntrails]

My real question is not whether it would achieve anything meaningful, but what would be the side effects of such a strike on allies in the region.

I don't have a remotely decent mental model of fallout etc from modern nuclear weapons - my assumptions are they're still toxic enough to be a bloody terrible idea anywhere near someone you like.

[hdivider]

I think the main concern would be escalation, e.g. Netanyahu feeling emboldened to use his weapons too. And of course Putin, to try to shock Ukrainian forces and population (good luck).

Alliances might get reshuffled as everyone realizes they need to reassess their nuclear defense and deterrence. It would fundamentally change the nature of modern warfare, not for the better. Let us hope this never happens.