It Islamists used the false flag before in Sarajevo. The story is that the US is actually complicit in this false flag attack, that the US trained the Islamists who were going into the region to set up a rebel capital and were surprised to find that the locals had switched sides, back to Assad because they were afraid of the outside radical Islamists who had taken over the rebel effort. They just wanted to retain control of their own territory, like they had under Assad.
I remember when Begich, sometime after the Sarajevo stuff was over and done nostalgically remembering how the muzzies sniped and shelled their own city to bring the Euros and the Americans into the fight against the Serbs.