Please note this does not mean the USSR wasn’t that way. Just want to clarify I’m not a tankie, lol.
The largest population of Marshallese people in the continental United States is in Springdale, Arkansas, just a short drive from where I live.
Why is there a large Marshallese population in Arkansas?
Well, you see, between 1946 - 1958, the US government detonated sixty-seven (yes, 67) nuclear weapons on the Marshall Islands, rendering dozens of the islands uninhabitable.
I suppose you could call it a "big whoops" except for the part a where they were fully aware of the dangers of radioactive fallout and just did it anyway.