A Kurdish peshmerga fighter takes up position against the Islamic State at the Khazir front line leading to Mosul September 7, 2014. Islamic State launched a lightning advance through northern and central Iraq in June, declaring an Islamic caliphate. With the help of U.S. air strikes, Iraq's army and Kurdish forces have been able to push the fighters back from some areas. REUTERS/Ahmed Jadallah (IRAQ - Tags: CIVIL UNREST CONFLICT TPX IMAGES OF THE DAY)