The americans are coming in the second that family is touched. They won't sit there and watch a global oil shortage occur with nations all running to the last remaining oil reserves producing. You can't do shit to them until America is addressed and that's the reality, I wouldn't advise anyone to fight just yet till America has changed it's backing and calls for some dialogue to occur between the arabs and get them on one side. Sunnis have broken down into MB and it's agents(violent terrorists, politicians, funders, humanitarian guys) and the other side 'royal families' in the gulf protecting their loot, palaces, gold, ferraris.
That's a huge conflict of interest right there and until America realizes their backing a side in history that has always proven to lose in the end, it's pointless. Tyrants don't last long, let's be real. The mere fact they are taking all the wealth into their families will be used as an excuse by opposing sides to rise up the people for a noble cause. You simply don't back puppets not for long anyways, you can back them while you plan for a long-term answer but you can't make the tyrants a long-term answer itself.
America needs to sit down and speak with the rational side of the MB and work out a favorable deal on it's foreign policy or some memoradum that all sides are held to account. America dont want a bar of their stealth or violent jihad.