As USA is world elite and trump looking the world that way that USA is leader in finance trades and military.
Then world new political and financial and trade landscape will be on the way "who needs who and why"
Here is how the trump looking world:
USA need partners that's for sure and the second ruler and who it will be ? It's Europe for example germany because germany cars and other things what germamy produce,once you drived with audi mb bmw u don't want to see any cheap plastic toyota or others.
So USA will decide who they need?
USA don't need china not asia and not even so much middle east neither canada neither UK the UK would be good only to security purposes to hold USA military weapons there as it's safe location it's ireland and not exacly in Europe , in otherwords UK Is USA little puppy wich is used to keep security check and things over Europe.
USA don't need russia neither not india or Even australia USA is very suffient Nation... And 2 rulers will be eu and usa that's for sure only what USA and trump wants.

If USA and EU Are in strong alliance nothing can disturb them and eu and usa don't care about brics their economy slowly going down anyways.