When the US wants to become a leader or a relevant player again, then Iâ(TM)m sure we can talk again.
When the US wants to become a leader or a relevant player again, they can get back to the rest of us a decade or so thereafter - provided that during that decade they demonstrate a commitment and an ability to be sufficiently stable and responsible.
Even if Trump loses his majority in the mid-terms, provided there ARE mid-terms; and even if he gets turfed out in the next election, provided there IS an election; it's going to take a very long time to re-establish trust in America as far as the rest of the world is concerned.
The literal imprisonment of the traitor-in-chief and his minions, followed by the instatement of a democracy more robust than the one just wrecked, might shave a bit off that time-frame.
Yep, the idea of America becoming leader again is pretty ludicrous. To borrow an Americanism, you've screwed that pooch, although most of the damage has been done in the last 2 months, it's really a culmination of the last 25 years of Republican fuck ups slowly diminishing US power and decreasing trust in the US. Americans, especially Republicans believed too much in American Exceptionalism, so much so that they couldn't see the harm in the rest of the world watching it fail and boy, has it failed.
When the US sorts it's shit out and decides it wants to rejoin the international community, you'll be partners at best, not leaders... And you'll only be partners if you limit the amount of damage Trump does in the mean time. For this, you really have no one to blame but yourselves.
That being said, Europeans have long memories... So if you can sort your shit out quickly enough with as little damage as you can, we'll remember that for a long time we were allies.