A Free Syrian Army fighter fires his machine gun toward Syrian army positions during an assault on a military base in Tal Sheen, Syria, on Saturday, Dec. 15, 2012. (AP Photo/Manu Brabo)

Photo by: Manu Brabo

A Free Syrian Army fighter fires his machine gun toward Syrian army positions during an assault on a military base in Tal Sheen, Syria, on Saturday, Dec. 15, 2012. (AP Photo/Manu Brabo)