So, in this thread, multiple Europeans (yes, even Brits, and yes, even after Brexit) are speaking of the US in relation to a European conflict, and they are not only failing to immediately and consistently condemn the idea of direct US military involvement, but actually seem disappointed that it's "off the table"? And this not only after the recent disaster in Afghanistan, but also after the, well, you know...disasters of actual US military involvement in Europe in the 90s?
Can only guess that Clinton's cheating "scandal", Blair's media wave around then, short memories etc, have obscured the fact that Clinton was involved in more military conflicts than either of the Bushes, and Clinton mishandled his lot relatively almost as badly as Georgie the Younger et Dumber.
Biden, Trump et al are even more incompetent than Bush/Clinton (all of them scum, BTW), and the US military is even more compromised than back then...so what the **** does tell you? ******* armchair generals. You'd be more fool to think the US isn't doing plenty indirectly/covertly - but US sabre rattling, oh the epic US sabre rattling, everything's so ******* boring without that!!1
Personally my concerns are with the Biden administration rather than US involvement, etc. Biden has managed to make the US look weak, weaker than it actually is, to would be hostile actors and that has upped the risk. There is a very fine balance to it though - this needs a robust and united front from the West but balanced without being too confrontational and that isn't just about the US - many of the EU states are doing their own thing/looking to their own interests as well.
I suspect a significant if not fundamental factor in this whole situation is Putin seeing how far he can push Biden before there is a real push back and that is highly risky - especially as the US is refocussing a lot on China at the moment. (The one redeeming feature with Trump he was so unpredictable it kept opposing actors guessing).