A country that can't feed itself, fuel itself or defend itself, has few options. When the rules no longer protect you, you must protect yourself.But let's be clear eyed about where this leads.A world of fortresses will be poorer, more fragile and less sustainable. And there is another truth. If great powers abandon even the pretense of rules and values for the unhindered pursuit of their power and interests, the gains from transactionalism will become harder to replicate.Hegemons cannot continually monetize their relationships.Allies will diversify to hedge against uncertainty.
A withdrawal into a fortress won't work (though bringing a bunch of things 'home' is very much needed as a risk mitigation to exposure to US) Networks of allies, and thus the EU, are a better way to move forward. True wrt complexity etc.