A child uses a megaphone to lead others in chanting Free Syrian Army slogans during a demonstration in Bustan Al-Qasr, Aleppo, Syria, January 4, 2013.

Demonstrators step on a picture of Syria's President Bashar al-Assad during a protest against his regime in Aleppo's Bustan al-Qasr district, January 4, 2013.

Damaged buildings and shops with members of the Syrian army patrolling in the distance in the old city of Aleppo, Syria, January 3, 2013.

Men stand amidst wreckage and debris after a car bomb exploded at a crowded gas station in Barzeh al-Balad district in Damascus, in this handout photograph released by SANA on January 3, 2013.

A father reacts after the death of two of his children whom activists said were killed by shelling by forces loyal to Syria's President Bashar al-Assad, in al-Ansari, Aleppo, Syria, January 3, 2013.

Free Syrian Army fighters stand near a fire after shelling by forces loyal to Syria's President Bashar al-Assad, al-Ansari, Aleppo, Syria, January 3, 2013.

Residents wear masks as they search for bodies after shelling by forces loyal to Syria's President Bashar al-Assad, al-Ansari, Aleppo, Syria, January 3, 2013

Members of the Free Syrian Army stand behind a machine gun turret with a flag reading "There is no God but Allah and Mohammad is his messenger" in Aleppo's Bustan Al Qaser district, Syria, January 2, 2013.

A Free Syrian Army fighter asks a child to move away from his house's window as a security measure in Aleppo's Bustan al-Qasr district December 30, 2012.

A boy watches men dig graves for future casualties of Syria's civil conflict at Sheikh Saeed cemetery in Azaz city, December 30, 2012.