British IS leader Jihadi John 'probably' killed in air strike

By John Davison and Mariam Karouny BEIRUT (Reuters) - The United States targeted British Islamic State leader "Jihadi John" in an air attack in northern Syria which Britain said would "strike at the heart of Islamic State" if the militant's death is confirmed. British Prime Minister David Cameron said the death of Mohammed Emwazi, who was known as Jihadi John after appearing in videos showing the killings of U.S. and British hostages, could not yet be confirmed and the Pentagon said it was still