FILE - This frame grab from a video provided by the Syria Democratic Forces (SDF), shows fighters from the SDF opening fire on an Islamic State group's position, in Raqqa's eastern countryside, Syria, Monday, March 6, 2017. The main U.S.-backed force fighting the Islamic State group in Syria has enough fighters to capture the extremists' de facto capital of Raqqa north of the country at a time when U.S. troops are playing a bigger role on the ground in the battle to conquer the city, a spokeswoman for the force said Friday, March 10, 2017. (Syria Democratic Forces, via AP)
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