every time there's an overthrow, you have oil prices spike and the cost of "democracy" is just new nutbags taking over.
We have the lowest gas prices when there's 20 Saddams over there, ruling with an iron fist.
We have the highest gas prices when multiple countries have riots. And, as egypt shows us, the new people that get in will immediately give the USA the middle finger and let Iran smuggle weapons to hez, etc.
So for US interests, this "democracy" is a very bad thing - cause the majority of them hate us. Far better to have one dictator - with a shitload to lose - who will "play ball" with the USA when it comes to oil and keeps their dipshits in line for the most part.