"Between the two Presidents, we have see a handful of small cells of terrorists on the fringes, grow into armies taking over entire countries. "
Which of course is not really the case, despite what you think of "Arab Springs" or US Presidents etc.
Libya for example, was already governed b a terrorist, ever bit as malign and deadly as anyone or anything currently at large in that country. Same with Syria.
I can't off the top of my head think of a country where "a handful of small cells of terrorists on the fringes" has taken over a country. A lot of tribal strife certainly.
However perhaps the preferred option for the US would have been to have supported Mubarak, Gaddafi, Ben Ali, Assad etc.
In which case a lot of people would now be rightly condemning them for propping up murderous dictators.
And the consequences of doing nothing? Would Libya without NATO intervention today be at peace? Almost certainly it would be even worse than it is now. Syria, for example ...