the situation where europeans feel they are in conflict with their best ally and economic partner says they actually need to relearn the lessons of realpolitik.
The answer is no.
It is laughable to act like it’s the Europeans who feel they are in conflict with their best ally. Actually hilarious for you to suggest this.
This is actually what friends do.
The idea of the US actually getting into armed conflict with any of them was totally beyond the pale, yet today the American President's actions and words are causing NATO to reposition assets to defend against a possible American incursion.
It is not Europe who has become totally unhinged, and again I'll say that if the stakes weren't so high, I would be literally laughing at your supposition that it is.
Satisfied?