Jeb Bush is a jackass.
On the other hand, maybe he WANTS chaos in the Middle East. Pretty hard for Islam to start World War III when it is engaged in a Civil War.
I've often wondered whether the real goal of "regime change" and "nation building" is to send once semi-stable countries into chaos. The only other alternative is that the advocates of these policies are extremely naive and are stupid enough to think that western style republican governments will take root in the Middle East and elsewhere in the Third World.
If the goal is to create chaos, it's still a misguided one, since terrorist organizations can flourish in times of civil war in ways that they can't under the stable rule of an autocrat.