Why don't you ask Germany, Italy, and Japan what happened to their money in U.S. banks at the start of WW2?
Countries that declare on the U.S. - like Iran did in 1979 -- tend to get their money confiscated and not returned. The money is used to fund our defense against their aggression or to compensate the victims of their aggression.
Oh yeah, we had nothing to do bringing that onto ourselves.