I said when this was posted a few weeks ago.
I reckon it's more likely to be a Mossad plot, to make ISIS think their leader is a Mossad agent, so they chop their own leaders head off. Brilliant. Then once he's taken care of, they can start rumours about the rest of them, so they will start turning on each other, thinking everyone is a Mossad agent. A movie in the making.
