pole-bro, a peaceful world like the "unipolar moment" of 1991 to the mid-2010s may not come back in our lifetimes.  countries will be focusing on military buildups during this new cold war, and will be much more like police states again, eager to prevent "wrong-think."  de-nuclearization is almost certainly a thing of the past. more countries will be acquiring nukes in the future, to protect themselves.
United States