Unfortunately for the remaining free world, there really aren’t any nations today in the same geopolitical situation the US held in the late 30’s compared to the other world powers. When it does hit, I don’t see anybody able to come bail out the rest of the free world.
Except maybe Israel,...as a force multiplier.
Israel doesn’t have troops or equipment to project power much beyond their immediate sphere of influence. A midnight raid is one thing, a cross theater war with occupation another.