'This is our football. it's made of skin': ISIS fanatics post sick World Cup tweet after beheading Iraqi policeman in his bedroom

                                                                                                                                                                                                                   As a shocking picture of the insurgency continues to develop, the Islamist group are posting barbaric videos online intent on showing the world they will stop at nothing to achieve their end game. In one, which is too graphic to publish, fighters are seen knocking on the door of a Sunni police major (top left and right) in the dead of night. When he answers, they blindfold and cuff him. Then they carve off his head with a knife in his own bedroom as sweetly lilting religious hymns are played over the top.