it's already gone. as soon as we re-elected the felon, everyone knew they couldn't trust us
For instance, in Canada he has repudiated a trade agreement he himself negotiated in his first term and threatened repeatedly to annex us.
Americans who treat foreigners as abstractions shrug off that sort of thing and assume you can go back to normal but reliability is shot and trust is broken.
In term one the remaining vestiges of Republican and state apparatus ensured continuity on many fronts. That's all gone.