This is a self fulfilling prophecy. It may only be over because the administration is actively trying to create the multi-polar world. It could absolutely be fixed by Congress re-asserting its power.
Something that is “already over” cannot be “un-over”. That’s not how “is already over” works. It means it’s done, finito, not a prophecy but a historical fact. We have to move on. And that means less interference in internal European affairs like Ukraine-Russia and more protection of our interests like consolidation of power over the Atlantic, the Arctic, and the Americas.
“Used to be” is not “is”. The USSR was an ally. As everyone is pointing out here, there’s no going back. Given that, and as much as I preferred the old order, we have only forward to go.
If there were a path back, there’d be a point. But in this discussion, everything has already happened. There’s not much point in saying “if you hadn’t”. Well, Trump did. Having done what he did, nothing to do now but to go full bore.
Now that we are on a war footing, potentially with our erstwhile allies who have no interest in renewing the alliance given present conditions, the only path to preserve US control is aggression.
Yes, obviously a path back to that. Self-inflicted or not, it has been inflicted, and Europe has made it clear that it's a one-way road. Half-measures here will simply ruin us. Two possible paths existed: an attempt back to the alliance, or an attempt forward where the US simply exerts what strength she has before it wanes. Now that Europe has made it clear the former isn't on the table, the latter is the only thing available.
Think of it like this: America fucked up, and maybe with other allies at other times we could have gone back to the old ways. But these aren't those allies and this isn't those times. So we close doors on old friendships and go at it the other way.