The problem is, the US has never been a normal country. Ever. Not a single one of us is unaware of the danger the US posed to humanity. We just always assumed that the people of America would always keep it in check, if for only their own survival and self interest. What Trump did was prove to us all, is that this assumption was false. America is not the special case we thought it was.
So now, the only thing we can do is recalibrate around the reality that it is not, in fact safe to have the kind of relationship we had before. Not just for one administration, but ever. Because if it happened once, it can and likely will happen again.
Some lines you cross, don't have a normal to go back to.