Anything, everything, and nothing that comes out of Syria is credible.
The Saudis will cooperate with any entity that will operate to continue US dependence on Saudi oil. One such group is the Syrian "rebels" by agreement.
Saudis finance extreme fundamentalist Islam all over the world and never have to answer a question about it's effects. Assad and his father have killed more Muslim Terrorists (from the exact same organizations that have successfully attacked the Continental United States), than any other modern nation.
Yep, Assad's a bad guy alright, it's just that he ain't got the dough to pay of the really bad ones to leave him alone.