In this April 30, 2014, file image provided by the Syrian Revolution Against Bashar Assad, which has been authenticated based on its contents and other AP reporting, Syrian rebels pray in front of their tank at al Mutayia village in the southern province of Daraa, Syria. Syrian rebels backed by the United States are making their biggest gains yet south of the capital Damascus, capturing a string of towns from government forces and aiming to carve out a swath of territory leading to the doorstep of President Bashar Assad's seat of power. (AP Photo/the Syrian Revolution Against Bashar Assad, File)
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