I dunno, seemed to last well into Obama's tenure in practice if not in rhetoric, from what I can tell, and Syria may well be a bigger disaster than Afghanistan and Iraq combined by any measure, including realpolitik (see: its effects on European politics, maybe also on the situation in Turkey though I'm less certain on that one). Yes, yes, the war in Iraq contributed to it in certain important ways, but didn't dictate our response to it, which was about as wrong as it could have been, unless there were some serious poker chips in play with Russia that we mere observers couldn't see, i.e. aside from the obvious ones. There's been no widespread condemnation of that action or even common recognition that we're the reason it's such a big mess, as there eventually was in the case of Iraq at least, and incidentally we're still in Iraq and Afghanistan, so neoconservatism seems to be alive and well in some sense.

Mind, I protested the war in Iraq, was overall a fan of Obama's domestic policies, so I'm not a partisan looking for reasons to bash Obama or try to rescue Bush's incredibly poor legacy or anything like that.