I do not think is going to be as simple as that. While Europe cannot replace fully the US support to Ukraine, there has been plenty of EU money for that purpose. And there can be more and perhaps enough to make things difficult for Ruzzia for a long time.

If Trump wants to get to be a candidate to the Nobel price - which is all his aim if we are honest - he will need to make sure Europe feels there's enough security for the future. I am inclined to think that Europe needs to be nearly self sufficient in defence for the future.