As bad as the Mullahs are in Iran (and they are bad) they seem sane compared to the jihadis out of the Sunni Gulf be they ISIS or al-Qaeda or the Muslim Brotherhood.
You do know that many of them belong to a branch of Shia Islam that believes it is their duty to start a Nuclear war so that the 12th imam (the Mahdi) will return and bring world peace united under Islam, don't you?
The ISIS whack jobs will never be within arms reach of nuclear weapons, but those Doomsday worshiping Ayatollahs will.
In the long run, the Kooks in Iran are a bigger threat to the world than the Kooks in ISIS.