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A Syrian man and a boy ride bicycles in the northern city of Aleppo on February 8, 2013. Syrian forces shelled rebel belts, the Syrian Observatory for Human Rights said, as an army offensive raged into a third straight day. AFP PHOTO/AAMIR QURESHI (Photo credit should read AAMIR QURESHI/AFP/Getty Images)

A Syrian man and a boy ride bicycles in the northern city of Aleppo on February 8, 2013. Syrian forces shelled rebel belts, the Syrian Observatory for Human Rights said, as an army offensive raged into a third straight day. AFP PHOTO/AAMIR QURESHI        (Photo credit should read AAMIR QURESHI/AFP/Getty Images)