An Iraqi federal policeman writes a Shia religious blessing on a mortar before firing it at an Islamic State position in west Mosul, on April 12, 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)
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