Well, see - thats what you don’t know.
But in any case, the “wall” between shia and sunni doesn’t mean what most people think. For example: AQ was run from Iran, and bin Laden’s family and Zawahiri safehoused there, for years after 2003. This is well documented.
Shia and Sunni drop the conflicts when they fight the kufr.
Assad is Irans puppet, the MB are Wahhabi.
He's gotta come down on one side of the fence sooner or later.