Too much scaremongering about what happens in Europe if trump wins.
Firstly, Zelensky will simply tell him to fuck off, trump can't force him to give up any land, he can withdraw support obviously, but I feel Europe would step in.
Secondly, he could also withdraw support/finance for NATO, but trump likes power, and depending on what he tells NATO, Europe (incl UK) can just tell him to take his troops out of their bases in Europe, he won't like that, and he will back down imho. The US has bases all over Europe, and it does so for influence in Europe, there's no way he'll want to lose that. So there's not much logic in that argument either.
Also before anyone says putin will over run Europe, think on, because putin has been completely unable to over run Ukraine, so he won't be thinking of taking the rest of Europe on (with or without the US).