The US change of tone on Ukraine has been amazing. All the newspapers are like "there's no reason to go to war for Ukraine", as if the rationale has somehow changed from years ago. It hasn't, not one bit. This is just rationalizing growing US weakness. Biden and Democrats simply won't benefit from this military action because they're already viewed as having failed at or caused multiple crises, they don't have the support for a new military conflict.
The military, and the war lovers, are pissed at Biden for pulling out of Afghanistan. It was their fault, they lied and screwed up for decades. But, of course, they are pointing the finger elsewhere..
The problem is, Germany gets it's energy from Russia and it's winter. They don't want to risk getting cut off. France is massively pissed off at us because of that sub Australia wants.
There is serious reluctance to get involved because as soon as our tanks start rolling towards Ukraine, Putin invades, and we will be in a deadly serious shooting war. It's been a long time since we faced down a military that can offer us a challenge, and is seriously dug in.
This situation genuinely sucks. We don't have the support we would absolutely have to have from our allies. We should have been building up in Europe for years, to counter Putin. Hasn't happened.
We have a choice between several different, yet awful, choices. The way we used to do this was roll with what we have, and try to make it work. Sometimes that works, like Korea, but sometimes that doesn't.
But this time, Putin would throw everything he has at us. We're simply not ready.