Meanwhile, I think if Europe had any spine, we would be massing troops to liberate America.

You are talking about the same Europe that did settler-colonial genocide there, and continues to do things like settler-colonial genocide in Palestine, invading Iraq, Afghanistan, Libya, Syria, Iran, and so on.

Chances are, Europe would just do more genocide, rather than liberation.

We need to stop this isolationist shit

What "isolationist shit" are you talking about?