I think several posters may be talking past each other on the topic, so I’m going to sum my understanding to avoid any deep discussions of India’s historical relationship with Europe, which is probably deserving of it’s own thread(s).
First, we have the most (?) likely scenario, say 1-3 tactical nukes used in the territory of the Ukraine. Russia will use the first to stave off any further loses of conquered territory, and likely at least one more to prove they’re serious if Ukraine keeps trying to recover what they’ve lost. But while one or more may be near NATO territory to send a message, none will be direct, although fallout is as always a different issue.
Under this scenario, from India’s POV, it may well still be Ukraine’s problem - horrible, and setting a bad precedent, but still largely localized and not worth upending their own economic and political situation for.
The second scenario, we have a more generalized exchange perhaps as many as a dozen tactical or (G-d forbit) an actual strategic use, while still confined to Ukrainian territory, but with consequences that can not help but spread due to the volume used, with the possibility of at least one striking NATO territory, probably with an “ooops that was an accident, we were targeting the supply depot on the border, our bad, we’ve executed those responsible -wink wink-”. Just barely enough of a fig leaf that Russia might bet that NATO won’t treat it as a direct attack on territory and retaliate in kind.
This is where it will likely get very hard for both sides of the conflict to NOT look at India and China and demand they pick sides. Which they will be hard pressed not to, but still not an absolute given.
The third is a limited nuclear exchange, for values of limited, with escalating tit for tat exchanges across Europe and probably Russia, where both sides steadily scale up the number and size. Something mentioned in other threads where single digits of claimed nuclear arsenals are used, perhaps a few hundred in all but SOMEHOW both sides avoid going further. Extremely unlikely IMHO, and yeah, at that point, no nation is going to be able to avoid the side effects even if we avoid a full on exchange. Absolutely by that point it’s everyone’s problem, and for far more serious reasons that just economic consequences.
But my concern is that IMHO once Scenario One happens, it makes two much more likely, which in turn makes three seem a rational response, which likely ends with M.A.D.
And I see every reason to believe Scenario One isn’t becoming more likely by the day. I still don’t think we’re at the 50/50 mark in the next 8 weeks (if only because I don’t think major territory exchanges will be possible over the winter months), but I wouldn’t give odds on 6-12 months.