In David Brin's novel Earth part of the backstory is that WW3 is basically everyone else vs Switzerland and everyone nearly loses (the Swiss almost use cobalt salted doomsday bombs).
— It was to be announced at the P/a/r/t/y/ C/o/n/g/r/e/s/s/ Federal Council presser on Monday. As you know, the P/r/e/m/i/e/r/ President loves surprises.
(as far as kleptocrats hiding loot in banks goes, I believe currently the New World, especially states such as Montana, are better tax-havens than we are.)
https://en.wikipedia.org/wiki/Earth_(Brin_novel)