Citizen journalism image provided by Aleppo Media Center AMC which has been authenticated based on its contents and other AP reporting, shows Syrian rebels stand in the rubble of damaged buildings due to government airstrikes, in the neighborhood of Karam Tarab near Aleppo International Airport, in Aleppo, Syria, Wednesday, Feb. 13, 2013. Syrian rebels fought pitched battles Wednesday against regime forces at a military base that protects a major airport in the country's north in fighting that has left more than 40 government troops dead, opposition activists said. (AP Photo/Aleppo Media Center AMC)
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