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A Free Syrian Army fighter sits on a sofa inside a house in Deir al-Zor, May 13, 2013. REUTERS-Khalil Ashaw
A Free Syrian Army fighter fires back at Syrian Army's position during what activists say was clashes between the Free Syrian Army and forces loyal to Syria's President Bashar Al-Assad, in Deir al-Zor May 19, 2013. REUTERS- Khalil Ashaw
Free Syrian Army fighters run up the stairs of a building in Aleppo's Salaheddine neighbourhood April 28, 2013. REUTERS-Aref Hretan
A member of the Free Syrian Army interacts with children in Aleppo's Karm al-Jabal district, June 6, 2013. REUTERS-Muzaffar Salma
A fighter from the Aoun-bi-allah Brigade, which operates under the Free Syrian Army, smokes while resting in Aleppo March 16, 2013. REUTERS-Giath Tah
Free Syrian Army fighters run to avoid a sniper in Aleppo's Salaheddine neighbourhood April 28, 2013. REUTERS-Zaid Re
Joseph, a 19-year-old fighter of the Aoun-bi-allah Brigade which operates under the Free Syrian Army, is held in a blanket after a sniper shot him in his abdomen in Aleppo March 16, 2013. REUTERS-Giath Tah
Members of the Free Syrian Army break into a house in the old city of Aleppo March 2, 2013. Picture taken March 2, 2013. REUTERS-Saad Abobrahi
Men are helped out of a burning factory through a hole in a wall after trying to put out a fire that resulted from jet shelling in the al-Meyasar district of Aleppo February 21, 2013. REUTERS-Hamid Khati
A Free Syrian Army fighter (L) looks at his comrade as he is shot by sniper fire in the Ain Tarma neighbourhood of Damascus, January 30, 2013. REUTERS-Goran Tomasevi
Women, who are part of the Sawt al-Haq, stand with their weapons as they undergo military training in Aleppo, February 17, 2013. REUTERS-Muzaffar Salma
A Free Syrian Army fighter protects his ears as others fire anti-aircraft artillery during an air strike by forces loyal to Syria's President Bashar al-Assad, during clashes near Aleppo international airport, February 12, 2013.REUTERS-Malek Al Shemal
Fighters from the Free Syrian Army's Tahrir al Sham brigade fire at Syrian army positions during heavy fighting in Mleha suburb of Damascus, January 26, 2013. REUTERS-Goran Tomasevi
A Free Syrian Army fighter throws a hand grenade inside a Syrian Army base during heavy fighting in the Arabeen neighbourhood of Damascus, February 3, 2013. REUTERS-Goran Tomasevi
Free Syrian Army fighter, who was wounded by a sniper, is carried by other fighters outside a Syrian Army base during heavy fighting in the Arabeen neighbourhood of Damascus, February 3, 2013. TREUTERS-Goran Tomasevi
A Free Syrian Army fighter fires a rifle through a hole in a wall of a Syrian Army base, just before he was shot in the head by a sniper, during heavy fighting in the Arabeen neighbourhood of Damascus, February 3, 2013. TREUTERS-Goran Tomasevi
A Free Syrian Army fighter fires a rocket propelled grenade during heavy fighting in the Ain Tarma neighbourhood of Damascus January 30, 2013. REUTERS-Goran Tomasevi
Free Syrian Army fighters run for cover as a tank shell explodes on a wall during heavy fighting in the Ain Tarma neighbourhood of Damascus January 30, 2013. REUTERS-Goran Tomasevi
Free Syrian Army fighter, who was wounded by a hand grenade, lies on the ground during heavy fighting outside a Syrian Army base in the Arabeen neighbourhood of Damascus February 3, 2013. The hand grenade was thrown by Syrian Army soldiers and wounded four Free Syrian Army fighters. REUTERS-Goran Tomasevi
Free Syrian Army fighters rest in Mleha suburb in Damascus January 17, 2013. REUTERS-Goran Tomasevi
A Free Syrian Army fighter feeds a cat in the old city of Aleppo January 6, 2013. REUTERS-Muzaffar Salma
A Free Syrian Army fighter fires his weapon during clashes with forces loyal to Syria's President Bashar Al-Assad in Aleppo's Bustan al-Qasr district December 30, 2012. REUTERS-Muzaffar Salma
A Free Syrian Army fighter pulls a boy off the street as a sniper fires during fighting with forces loyal to Syrian President Bashar el-Assad in Aleppo city December, 31, 2012. REUTERS-Ahmed Jadalla
Free Syrian Fighters drink tea as they rest in Aleppo's district of Salaheddine December 29, 2012. REUTERS-Muzaffar Salma
A Free Syria Army fighter watches from his position during a fight with forces loyal to President Bashar al Assad at the front line in Aleppo December 26, 2012. REUTERS-Ahmed Jadalla
Fighters from the Islamist Syrian rebel group Jabhat al-Nusra clean their weapons in Aleppo December 24, 2012. REUTERS-Ahmed Jadalla
A Free Syrian Army fighter carries the body of his colleague Abdullah during his funeral in Aleppo December 21.2012. According to local residents, the fighter was killed by forces loyal to Syria's President Bashar al-Assad on Thursday. REUTERS-Ahmed Jadalla
A Free Syrian Army fighter takes up position inside a burnt room in the Aleppo district of Salaheddine November 12, 2012. REUTERS-Zain Kara
A member of the Free Syrian Army talks to a woman during a patrol to search for pro-government forces in Harem town, Idlib Governorate, October 26, 2012. REUTERS-Asmaa Wagui
A wounded man, suspected to be from pro-government forces, talks to members of the Free Syrian Army as he tries to convince them he did not shoot at them during fighting in Harem town, Idlib Governorate, October 26, 2012. REUTERS-Asmaa Wagui
Free Syrian Army fighters fire a rocket towards a castle where pro-government forces are based, in Harem town, Idlib Governorate, October 28, 2012. REUTERS-Asmaa Wagui
A Free Syrian Army fighter reacts as he carries the body of a fellow fighter after he was killed by a sniper loyal to Syria's President Bashar al-Assad in Khan al-Assal area November 10, 2012. The headband on the fighter reads, 'God is great'. REUTERS-Zain Kara
A member of the Free Syrian Army watches for snipers as clashes continue with pro-government forces in the Old Town of Aleppo, November 2, 2012. REUTERS-Asmaa Wagui
A member of the Free Syrian Army fires at a sniper as he runs for cover during clashes with pro-government forces in Harem town, Idlib Governorate, October, 25, 2012. REUTERS-Asmaa Wagui
Members of the Free Syrian Army are seen at a front line in al-Mid area in Aleppo city in northern Syria October 11, 2012. REUTERS-Zain Kara
A Free Syrian Army fighter reacts after his friend was shot by Syrian Army soldiers during clashes in the Salah al-Din neighbourhood in central Aleppo, August 4, 2012. The rebel's friend was killed from a very accurate Syrian army sniper who found a hole in between sandbags and fired. The sniper shot him in the chest.REUTERS-Goran Tomasevi
A Free Syrian Army fighter fires his sniper rifle from a house in Aleppo, August 14, 2012. REUTERS-Goran Tomasevi