MOSUL, IRAQ - APRIL 13: An Iraqi federal policeman uses a helmet on a stick to try and draw fire from an Islamic State sniper in an attempt to make him reveal his position during the battle to recapture west Mosul on April 13, 2017 in Mosul, Iraq. Despite being completely surrounded, Islamic State fighters are continuing to put up stiff resistance to Iraqi forces who are now having to engage I.S in house to house fighting as they continue their battle to retake Iraq's second largest city of Mosul. (Photo by Carl Court/Getty Images)
