This citizen journalism image provided by Aleppo Media Center AMC which has been authenticated based on its contents and other AP reporting, shows Syran military helicopters at Mannagh air base in ... more 
This citizen journalism image provided by Aleppo Media Center AMC which has been authenticated based on its contents and other AP reporting, shows Syran military helicopters at Mannagh air base in Aleppo province, Syria, Tuesday, June 18, 2013. Syrian warplanes bombed rebel positions near a contested military air base in the north of Syria on Tuesday, activists said, while President Bashar Assad's forces nearby pressed ahead with an offensive against opposition fighters in the country's largest city Aleppo. (AP Photo/Aleppo Media Center AMC) less 
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Associated Press | Photo By Aleppo Media Center AMC
Tue, Jun 18, 2013 11:30 AM EDT