Who else would benefit?
Saddam Hussein (would invade Kuwait)
Iran (would invade small Gulf states)
China
I would say the strongest cooperation is between Osama and Saddam. They are prolly in cahoots. They have the most to gain from the US leaving Arabia. China would be the superpower that would rush into the vacuum left by any US departure from The Gulf and the Arab world. China has the weaponry to make this all stick.
The only problem is that Saddam is such a control freak, although he plays the Islamic card he is not a true Islamic is Osama Bin Ladens sense.
With America gone, Saddam will happily gobble up Kuwait, and then he will take out Saudi Arabia.
He knows that after the pro Western States fall to the radical Islamic movement, countries such as Iraq, Syria, and Libya are next.
That is why he is so big on talk and low on action.
Sadam is Stalin to Osama Bin Ladens Trotsky, the control freak and the exporter of revolution as opposed to just terror.
China is not a Super Power in the American sense she does not have the force projection, and I dont think she wants the head ache of the Middle East.
Tony