Yes, quite an accomplishment. He's winning bigly already.
Generally, I'm the type that doesn't care what another country thinks of us when it comes to policy, the military etc. But I can foresee a scenario where the world gets together and effectively blacklists us. And there's not a lot we could do without military intervention.
China is the world's manufacturer now. All America does is throw valueless money around and PO people at Barry's whim. We simply arent needed right now and we wouldn't be until they all turned on each other as history shows they invariably do.
Now normally, we could weather it. We have all the resources to survive. But liberals would never let us use them. THAT would lead to a civil war. So really, someone like the UN, China or Russia doesn't have to lift a finger other than saying "You're on your own America" and we'll finish ourselves off internally.
All that over Trump? At this point I would not be remotely surprised.