Nope, no guarantee. But disposing of 30+ yr. old dictator regimes can't be any worse. At least now there is a glimmer of a chance for change.
Ignoring this rare circumstance/opportunity where many Mideast countries are riding themselves of tyranny and some suggest isolating our country/influence from other parts of the world is myopic. It's also insulting to those four who died trying to help Libya evolve into a potential democracy.