Why is the situation in Syria so complex?

Wow Syria is so complex! There still is no evidence that Assad was behind the chemical blasts. Furthermore, it doesn’t seem in his best interest to do so, he already has Syrian rebels against him, most who are Muslim-led and are now getting the backing of Al Qaeda endorsements.

So the U.N. essentially wants to destroy Assad’s regime, and then who goes into power? Wouldn’t there be a strong uprising of Muslim-led support exactly what we might expect the U.N. would not want?

Do you believe the interview Assad had with Charlie Rose was enough to gain a majority support from the U.S.A. to not attack Syria?