This is an opinion piece in the Guardian but entirely based on documentary evidence and ongoing legal actions in the so called war on terror. https://www.theguardian.com/commentisfree/2015/jun/03/us-isis-syria-iraq?fbclid=IwAR26fC470VexPo17OiCnr0I13Oaq2uV5H7SVVnUeaI054LiC3QIu3Vf5ZDI