This frame grab from video released Tuesday, Oct. 17, 2017 and provided by Hawar News Agency, a Syrian Kurdish activist-run media group, shows fighters from the U.S.-backed Syrian Democratic Forces (SDF) celebrating their victory in Raqqa, Syria. U.S.-backed Syrian forces liberated the city of Raqqa from Islamic State militants on Tuesday, a senior commander for the force said, adding that clearing operations were underway to remove land mines left behind and search for the extremist group's sleeper cells. (Hawar News Agency via AP)
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