The Chinese jokingly call Trump "Comrade Jianguo", because of how his trade war has made China become more independent and stopped relying as much on American companies.
In the same way Trump's latest tantrum seems to be good for the Europe.
If it is, it will be crippling. There's enough misery on that country as it is; I don't want to see people suffer even more. But then again, maybe a systemic shock rattles the building enough.
The world economics is more interconnected that ever. Remember the crash in 1929 and what happened in the rest of the world. It's not going to be just America.