The foster parents of Isis and the other Sunni jihadi movements in Iraq and Syria are Saudi Arabia, the Gulf monarchies and Turkey. This doesn’t mean the jihadis didn’t have strong indigenous roots, but their rise was crucially supported by outside Sunni powers. The Saudi and Qatari aid was primarily financial, usually through private donations, which Richard Dearlove, the former head of MI6, says were central to the Isis takeover of Sunni provinces in northern Iraq: ‘Such things do not happen spontaneously.’