A Free Syrian Army fighter fires his weapon toward Syrian army positions in the Karmal Jabl district of Aleppo, Syria, on Sunday, Oct. 21, 2012. (AP Photo/Manu Brabo)
**FILE** A Syrian youth cries Oct. 11, 2012, outside Dar al-Shifa hospital in Aleppo, Syria, while standing next to the truck holding the body his brother, who was killed by Syrian Army shelling. (Associated Press)
**FILE** A Syrian child, wounded by Syrian Army shelling, lies in a truck bed after being treated by doctors at Dar al-Shifa hospital in Aleppo, Syria, on Oct. 11, 2012. (Associated Press)
**FILE** A Syrian nurse at Dar al-Shifa hospital in Aleppo, Syria, treats Oct. 10, 2012, a girl wounded by Syrian Army artillery shelling. (Associated Press)
**FILE** A Syrian man cries Oct. 11, 2012, near Dar al-Shifa hospital in Aleppo, Syria, while holding the body of his brother, who killed by Syrian Army shelling. (Associated Press)
A Syrian man, wounded by Syrian army shelling, cries while the bodies of his relatives lie on the street near Dar al-Shifa Hospital in Aleppo, Syria, on Thursday, Oct. 11, 2012. (AP Photo/Manu Brabo)
A Free Syrian Army fighter comforts a child wounded by Syrian army artillery shelling, at Dar al-Shifa Hospital in Aleppo, Syria, on Wednesday, Oct. 10, 2012. (AP Photo/ Manu Brabo)
In this Thursday, Oct. 11, 2012 photo, a Syrian youth cries next to the truck holding the body his brother, killed by Syrian Army shelling, outside Dar al-Shifa hospital in Aleppo, Syria. (AP Photo/ Manu Brabo)
Free Syrian Army fighters carry the body of a comrade away from the front line during clashes against Syrian army forces in Aleppo, Syria, on Wednesday, Sept. 26, 2012. (AP Photo/Manu Brabo)
Syrians who left their homes in early September to escape the fighting between the Syrian army and the rebels line up to collect water from a tanker as they take refuge at the Bab Al-Salameh border crossing. They hoped to enter one of the refugee camps in Turkey, near the Syrian town of Azaz. The days are getting colder now, adding to the hardships of war refugees. (Associated Press)
A Free Syrian Army fighter fires an anti-aircraft machine gun against a Syrian Army jet in the Saif Al Dula district in Aleppo, Syria, on Sept. 19, 2012. (Associated Press)