Demonstrators hold banners during a protest against Syria's President Bashar al-Assad, after Friday prayers in Kafranbel, near Idlib, Syria, January 11, 2013 in this picture provided by Shaam News Network.

A Free Syrian Army fighter uses binoculars near the Menagh military airport, in Aleppo's countryside, Syria, January 10, 2013.

A damaged car and buildings covered with snow are seen in the Jouret al Shayah area of Homs, Syria, January 10, 2013.

Residents evacuate their houses after being targeted by missiles fired by forces loyal to Syria's President Bashar al-Assad, in Aleppo's al-Mashhad district, Syria, January 9, 2013.

Children sit next to a fire in Aleppo city, Syria, January 9, 2013.

Civilians and Free Syrian Army fighters gather at a site hit by a missile in Aleppo's al-Mashhad district, Syria, January 7, 2013.

People help a wounded person after a missile hit Aleppo's al-Mashhad district, Syria, January 7, 2013.

This photo released by the Syrian official news agency SANA shows Syrian President Bashar al-Assad waving to his supporters after speaking at the Opera House in central Damascus, Syria, January 6, 2013.

Free Syrian Army fighters, wounded during the battle to capture Taftanaz air base, receive treatment at a field hospital in northern Idlib, Syria, January 6, 2013.

A Free Syrian Army fighter feeds a cat in the old city of Aleppo, Syria, January 6, 2013.

A man rides his bicycle past buildings damaged by shelling in the old city of Aleppo, Syria, January 6, 2013.

A family crosses a street piled with garbage in Aleppo, Syria, January 5, 2013.