But you brought it up. Nicaragua if we are following the laws of proportionality established by America and Israel in this invasion, Nicaragua alone has the right to level most of the unuted states, and to say nothing of the claims of other south american and middle eastern countries. So personally I'd rather not use the proxy argument unless one is comfortable with the idea of the USA having multiple nukes lobbed at it from all over the world.

Iran presently also isn't trying to Lebensraum "buffer zones" from other countries lands around itself.