It's kind of the problem with being the Lone Superpower.OK I guess i have to spell it out for you. Because "the World" would have gotten its ass kicked.
It was explained to the US what the risks were, how it was about to get things badly wrong. But hey, that could just be dismissed as "old Europe", and ignored.
If you can't help yourself from not making a bad mistake, no one can help you. And then you own it.