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Syrian-Kurdish women carry the coffin of a female fighter in Syria's northeastern city of Qamishli on July 21, 2016 during the funeral of sixteen fighters killed battling the Islamic State (IS) group in Manbij. US-backed fighters gave the Islamic State group 48 hours to leave the battleground Syrian town of Manbij, after US-led air strikes nearby killed scores reported to be civilians. / AFP / DELIL SOULEIMAN (Photo credit should read DELIL SOULEIMAN/AFP/Getty Images)

Syrian-Kurdish women carry the coffin of a female fighter in Syria's northeastern city of Qamishli on July 21, 2016 during the funeral of sixteen fighters killed battling the Islamic State (IS) group in Manbij.
US-backed fighters gave the Islamic State group 48 hours to leave the battleground Syrian town of Manbij, after US-led air strikes nearby killed scores reported to be civilians.
 / AFP / DELIL SOULEIMAN        (Photo credit should read DELIL SOULEIMAN/AFP/Getty Images)