In 4 years another administration could come in but there's still damaged trust. If something happens in 5, 6 years from now and article 5 kicks in then even if the US comes to help what is there to say they won't suddenly pull out again 2 years into a war when Vance takes charge? The reliability is gone.

But what about four years after that? It's just not a good idea to depend on someone who is aligned with your enemies, even intermittently.

The US has burned trust well past 4 years. This has shown how the US political system enables this. Every 4 years they elect someone who has the power to just toss out everything the previous administration did or committed to. Every 4 years... and the US is so politically divided that it only takes a few percent of opinion change at each election to swing to the other party with polar opposite views. As a result, why would any other country now trust the US in any agreement? (not to mention the large number of agreements they have signed then just abandoned later) Four years is nothing time wise.. barely enough time to get an agreement fully implimented before the US can just say "Nah..." There will be significantly less trust for the US even beyond the Trump era.

It would be delusional to think that this can be patched up with a new president, or that any of America's former allies will be willing to wait around twirling their thumbs, hoping that the next time America flips a coin, it turns out better.

The relationship is over. Maybe in 4 years America can start making some initial steps towards patching things up, but even that seems increasingly unlikely at this point.

Why would another Republican President act any differently than Trump after they see how well that works? A majority of the US either doesn’t care about international affairs or they are actively isolationist.