Kurdish fighters from the People's Protection Units (YPG), who are fighting alongside with the Democratic Forces of Syria, are seen at the eastern entrance of the the Tishrin dam, after they captured it on Saturday from Islamic State militants, south of Kobani, Syria December 27, 2015. A U.S.-backed alliance of Syrian Kurds and Arab rebel groups, supported by U.S. coalition planes, captured a dam on Saturday from Islamic State, cutting one of its main supply routes across the Euphrates, an alliance spokesman said. REUTERS/Rodi Said