Welcome to the concept of human history.

That said, this isn't particlarly new, or even that meaningful, and Europe has a LOT of US decoupling to do whether it wants to for nationalistic reasons or not. And a lot of integration, too, so they're a good ways away from having enough of a shared sense of identity for that to be a concern.

Your grandkids can cross that bridge when they get to it, if there are any bridges left to be crossed or grandkids to cross them.