Viewing the fighting in Syria as a proxy war between Saudi Arabia and Iran.

I don't think Saudi Arabia is likely to use its influence to hold back Islamist extremists, since it has spent years funding and supplying them. There have been reports about this all along, and the US government must have know about this. The US ignored the Saudi connection as al-Qa'ida, boosted by Saudi money, took over the Syrian resistance to Iran's friend. What kind of strategy was that?