But Ukraine is not a part of NATO, nor does it exist under its nuclear umbrella. So Putin won’t be starting a nuclear war with NATO, and if he did go ahead with tactical nukes in Ukraine, NATO (while maintaining strategic ambiguity regarding its response) maintains its response will be “destructive” but “conventional”. Legally speaking, NATO is not bound to retaliate against Putin in the event of such a strike. It will likely do so out of self-preservation interest.
Another important point to remember about Putin being able to hold on to his seat is the company of countries he rans with and depends on. Conceding defeat also imperils his position in the Arab world (note the bold OPEC+ move Russia lobbied hard for) and with key BRICS countries like China and India, who are already circling former Soviet realms of influence in Central Asia. Putin, and Russia, have a lot to lose, and no one likes a defeated ally unless they sell energy at unsustainable discounts indefinitely. Even if Russians don’t come after Putin themselves (which sounds unlikely to me), other countries could opt to install a more favorable ruler to protect and advance their (energy) interests. This is a method long favored by colonial empires, especially in (natural) resource rich countries.
But Ukraine is not a part of NATO, nor does it exist under its nuclear umbrella. So Putin won’t be starting a nuclear war with NATO, and if he did go ahead with tactical nukes in Ukraine, NATO (while maintaining strategic ambiguity regarding its response) maintains its response will be “destructive” but “conventional”. Legally speaking, NATO is not bound to retaliate against Putin in the event of such a strike. It will likely do so out of self-preservation interest.
Another important point to remember about Putin being able to hold on to his seat is the company of countries he rans with and depends on. Conceding defeat also imperils his position in the Arab world (note the bold OPEC+ move Russia lobbied hard for) and with key BRICS countries like China and India, who are already circling former Soviet realms of influence in Central Asia. Putin, and Russia, have a lot to lose, and no one likes a defeated ally unless they sell energy at unsustainable discounts indefinitely. Even if Russians don’t come after Putin themselves (which sounds unlikely to me), other countries could opt to install a more favorable ruler to protect and advance their (energy) interests. This is a method long favored by colonial empires, especially in (natural) resource rich countries.