I wonder if Iran will let this stand. They want to be the Big Dogs in the Muslim world.
Actually this could trigger nuclear reactions from Israel.
Opening act is the end of Damascus as an active city...
ISIS with nukes, chemical weapons etc. is a final straw one would think.
About Iran, I don’t know. However, the honchos come from a weird, extreme Shiite sect, so they may actually see the proclamation of new caliphate as the fulfilment of a promise. Maybe the Mahdi will emerge from the well...