Photo - In this citizen journalism image provided by the United media office of Arbeen which has been authenticated based on its contents and other AP reporting, a member of UN investigation team, is escorted by Syrian rebels, in Damascus countryside of Zamalka, Syria, Wednesday, Aug. 28, 2013. U.N. chemical weapons experts headed to a Damascus suburb on Wednesday for a new tour of areas struck by a purported poison gas attack, activists said, as Western powers laid the groundwork for a possible punitive strike and the U.N. chief pleaded for more time for diplomacy. (AP Photo/United media office of Arbeen)
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