Thus, the two supposedly Muslim men suspected of killing and mutilating an unarmed, off-duty soldier in the middle of a London street, while shouting “Allahu Akbar” (“God is Great”), were violating the injunction of their own holy book. Perversely, it was the non-Muslim Cub Scout leader who, in trying to save the soldier’s life, and standing up to his alleged attackers, was acting in accordance with Koranic principles. Let’s be clear: Islam doesn’t permit the killing of innocents. Jihad is permissible only in self-defence and if sanctioned by a legitimate government. To quote from our Prime Minister’s pitch-perfect statement outside No 10, Wednesday’s barbarism was “a betrayal of Islam and of the Muslim communities who give so much to our country”.