** FILE ** In this Saturday, Dec. 29, 2012, photo, Free Syrian Army fighters fire at enemy positions during heavy clashes with government forces, in the Salaheddine district of Aleppo, Syria. Activists say Syrian rebels have captured an oil pumping station in the north central province of Raqqa about 160 km east of Aleppo after days of fighting. (AP Photo/Abdullah Al-Yasin)

Photo by: Abdullah Al-Yasin

** FILE ** In this Saturday, Dec. 29, 2012, photo, Free Syrian Army fighters fire at enemy positions during heavy clashes with government forces, in the Salaheddine district of Aleppo, Syria. Activists say Syrian rebels have captured an oil pumping station in the north central province of Raqqa about 160 km east of Aleppo after days of fighting. (AP Photo/Abdullah Al-Yasin)