DEBAGA, IRAQ - OCTOBER 22: Tents are pictured in Debaga refugee camp where people displaced by fighting in and around Mosul have sought shelter, on October 22, 2016 in Debaga near Mosul, Iraq. Islamic State fighters set fire to a sulphur factory causing plumes of toxic gas to rise into the air as advancing Iraqi and Kurdish forces took more towns and villages in their continuing offensive to recapture Iraq's second largest city of Mosul from ISIS control. (Photo by Carl Court/Getty Images)
