Honestly, it's going to come down to deep state actors allying with BRICS powers to manage. The alternative is BRICS powers invading the USA to secure them, which will almost guarantee a nuclear incident. There are sane heads in the deep state around nuclear that have spent decades working to ensure they don't go off. They will work with foreign intelligence as long as they are able to avoid losing the planet for their families and generations of their children.
What happens to things like massive stockpiles of nuclear weapons is going to be a big question at that point.
Honestly, it's going to come down to deep state actors allying with BRICS powers to manage. The alternative is BRICS powers invading the USA to secure them, which will almost guarantee a nuclear incident. There are sane heads in the deep state around nuclear that have spent decades working to ensure they don't go off. They will work with foreign intelligence as long as they are able to avoid losing the planet for their families and generations of their children.
That seems plausible, but I wouldn't underestimate just how irrational these people are either.