A tank belonging to the Iraqi army fires toward Islamic State militants in Falluja, Iraq, June 25, 2016. Picture taken June 25, 2016. REUTERS/Stringer

A tank belonging to the Iraqi army fires toward Islamic State militants in Falluja, Iraq, June 25, 2016. Picture taken June 25, 2016. REUTERS/Stringer

A tank belonging to the Iraqi army fires toward Islamic State militants in Falluja, Iraq, June 25, 2016. Picture taken June 25, 2016. REUTERS/Stringer

June 26, 2016 5:39 AM (UTC+8)