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.

This citizen journalism image taken from video provided by Shaam News Network, which has been authenticated based on its contents and other AP reporting, shows a wounded man being pulled from the site of a Syrian government airstrike on a gas station in t

In this image taken from video obtained from the Shaam News Network, which has been authenticated based on its contents and other AP reporting, A Free Syrian Army fighter stands on a vehicle as he holds his weapon in Taftanaz village, Idlib province, nort

Syrian government airstrike

Residents walk past a damaged emergency vehicle in Aleppo, Syria, January 1, 2013.

Syria, deaths from conflict, updated January 1, 2013

A Free Syrian Army fighter fires at a sniper on the front line in Aleppo, December, 31, 2012.

Forces loyal to Syria's President Bashar al-Assad stand near dead members of the Free Syrian Army who tried to attack the Air Defense Base in Tal Hassil, December 31, 2012.

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.

U.N.-Arab League envoy to Syria Lakhdar Brahimi, left, shakes hands with Arab League Secretary-General Nabil Elaraby following a joint press conference at the Arab League headquarters in Cairo, Egypt, December 30, 2012.

A Free Syrian Army fighter stands next to his daughter in Aleppo's Izaa district December 30, 2012.

Free Syrian Army fighters fire at enemy positions during heavy clashes with government forces, in the Salaheddine district in Aleppo, December 29, 2012.

Free Syrian Army fighters transport ammunition which was seized from government forces' Wadi al-Daif military base at Maaret al-Numan,in the Idlib governorate in the northwest of Syria, December 29, 2012.

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Mideast Syria

A man searches for survivors after an air strike in Azaz city, North Aleppo, December 29, 2012.

Russia Syria

Men search for survivors after an air strike by a fighter jet loyal to Syrian President Bashar al-Assad in Azaz city, North Aleppo, December 29, 2012.

A member of the Free Syrian Army holds a weapon as he walks in Aleppo, Syria, December 28, 2012.

A protester holds a sign during a demonstration against Syrian President Bashar al-Assad in Bustan al-Qasr, a district in Aleppo, Syria, December 28, 2012.

A boy chops wood to use for heating in Aleppo, Syria, December 28, 2012.

Soldiers loyal to Syrian President Bashar al-Assad patrol the streets in a town in Aleppo province, December 27, 2012.