A rebel fighter passes through an access hole broken in the perimeter of a football pitch, close to the front line, where clashes between the rebels and pro-government troops have been taking place on the outskirts of the northern city of Aleppo, on July 4, 2013. #

A Syrian government forces tank, outside Khaled bin Walid mosque in the Khalidiyah district of Syria's central city of Homs, on July 31, 2013. The Syrian government announced on July 29, the capture of Khaldiyeh, a key rebel district in Homs, Syria's third city and a symbol of the revolt against President Bashar al-Assad. #

A female member of the Ahbab Al-Mustafa Battalion stands on a pick-up truck mounted with an anti-aircraft weapon as she undergoes military training in Aleppo's Salaheddine district, on June 24, 2013. #

A damaged church in Qusayr, on June 5, 2013. Syrian troops and their Lebanese Hezbollah allies captured the border town after a grueling three-week battle, dealing a severe blow to rebels. #

A man attempts to harvest wheat from a field on fire, which activists said was caused by shelling carried out by forces loyal to the Syrian regime, in Ma'arat Masrein, north of Idlib, on June 6, 2013. #

A Free Syrian Army fighter, near Kindi hospital, which is under the control of forces loyal to President Bashar Al-Assad, as both sides fight to take control of the hospital in Aleppo, on June 11, 2013. #

A defaced picture of Bassel al-Assad, brother of Syria's President Bashar, at the gate of the Minnig military airport, after it was seized by rebels, on August 8, 2013. #

Syrian men rush a heavily wounded man to hospital in Saraqeb in northwestern Syria after a barrel bomb dropped by an air force helicopter exploded less than 10 meters away from his car on July 20, 2013. The Syrian air force kept up a fierce campaign against Saraqeb and staged 10 air strikes, according to the Syrian Observatory for Human Rights, killing several people and injuring many others. #

A rebel fighter drills into a bomb at a makeshift weapons workshop in the northern Syrian city of Raqqa, on August 5, 2013, where fighters recycle ordinance used by pro-government forces. #

A rebel fighter places explosive packets into a suicide belt which will be detonated with the orange fuses (left) at a makeshift weapons workshop in Raqqa, on August 5, 2013, where fighters manufacture mines, bombs and improvised explosive devices to be used against troops loyal to President Bashar al-Assad. #

A Sunni Sheikh, who goes by the pseudonym of Abou Obaida, holds up his weapon, and gestures while calling upon worshipers to join a jihad against Syrian President Bashar al-Assad during Friday prayers inside Osama Bin Zayed mosque in Aleppo, on August 9, 2013. #

Soldiers of the Syrian government forces patrol a devastated street in the district of al-Khalidiyah, Homs, on July 31, 2013. The Syrian government announced the capture of Khalidiyah, a key rebel district in Homs, Syria's third city and a symbol of the revolt against President Bashar al-Assad. #

Vehicles abandoned by Syrian opposition fighters in Dabaa, north of Qusayr, in Syria's central Homs province as regime forces sought to mop up pockets of rebel resistance north of Qusayr, on June 7, 2013. #

In this image taken from leaked video obtained by Ugarit News and posted on Monday, July 15, 2013, which has been authenticated based on its contents and other AP reporting, purports to show a fireball from an explosion at a weapons depot set off by rocket attacks that struck government-held districts in Homs on Thursday, August 1, 2013. The blasts sent a massive ball of fire into the sky, killing scores and causing widespread damage and panic among residents, many of whom are supporters of President Bashar Assad. #

A man carries a boy wounded in what the Free Syrian Army said was an air raid by forces loyal to Syrian President Bashar al-Assad in the Duma district area near Damascus, on July 13, 2013. The air raid on July 13 was part of al-Assad's campaign to secure the Duma area from rebels, according to the Free Syrian Army. Picture taken July 13. #

People help a man after he was pulled out from under rubble at a site hit by what activists say was a missile attack from the Syrian regime in the besieged area of Homs, on July 25, 2013. #

Residents try to find their belongings among the rubble left of their homes after what activists said was an air attack from forces loyal to Syria's President Bashar Al-Assad in Bab Neirab, Aleppo, on July 27, 2013. #

Bodies lie at a morgue following fighting between rebel fighters and Syrian government forces on August 10, 2013 in the northern city of Raqqa, the only provincial capital in rebel hands. Syrian regime air strikes killed more than 30 people Saturday in the Latakia province, bastion of the ruling Assad clan, and the northern city of Raqqa, a monitory group said. #

Siham, wife of Mohammad Darro Jamo, mourns his death as she is comforted by a relative in Sarafand, southern Lebanon, on July 17, 2013. Militants assassinated a well-known supporter of Syrian President Bashar al-Assad in Lebanon early on Wednesday, security sources said, the latest sign of Syria's civil war spreading to its smaller neighbor. Mohammad Darra Jamo, a commentator who worked for Syrian state media and often appeared on Arab TV channels, was attacked by gunmen hiding in his house in the southern town of Sarafand, the sources said. Lebanon's state-run National News Agency now says that a prosecutor has indicted Siham along with her brother and nephew in the killing of her husband. #

People walk and shop on the first day of Ramadan, the holiest month in the Islamic calendar, at the Karaj Al-Hajez crossing, a passageway separating Aleppo's Bustan al-Qasr, which is under the rebels' control, and Al-Masharqa neighborhood, an area controlled by the regime, on July 10, 2013. #