This image taken from video obtained from Ugarit News, which has been authenticated based on its contents and other AP reporting, shows Syrian rebels preparing to fire a rocket at Mannagh air base in Aleppo province, Syria, Monday, May 13, 2013. The Syrian government wants more details before deciding whether to take part in a proposed U.S.-Russian initiative to negotiate a peaceful end to Syria's crisis, the country's information minister said, staking out a similar position to the main opposition group.(AP Photo/Ugarit News via AP video)
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