A resident sits in an area damaged by what activists said was an air strike by forces loyal to Syria's President Assad, in Salehin
A resident sits in an area damaged by what activists said was an air strike by forces loyal to Syria's President Bashar al-Assad, in Salehin neighbourhood in Aleppo January 25, 2014. REUTERS/Hosam Katan (SYRIA - Tags: CIVIL UNREST CONFLICT SOCIETY)
Residents collect belongings in an area damaged by what activists said was an air strike by forces loyal to Syria's President Assad, in Salehin
Residents collect belongings in an area damaged by what activists said was an air strike by forces loyal to Syria's President Bashar al-Assad, in Salehin neighbourhood in Aleppo January 25, 2014. REUTERS/Hosam Katan (SYRIA - Tags: CIVIL UNREST CONFLICT SOCIETY)
Residents gather at an area damaged by what activists said was an air strike by forces loyal to Syria's President Assad, in Salehin
Residents gather at an area damaged by what activists said was an air strike by forces loyal to Syria's President Bashar al-Assad, in Salehin neighbourhood in Aleppo January 25, 2014. REUTERS/Hosam Katan (SYRIA - Tags: CIVIL UNREST CONFLICT SOCIETY)
Residents collect belongings in an area damaged by what activists said was an air strike by forces loyal to Syria's President Assad, in Salehin
Residents collect belongings in an area damaged by what activists said was an air strike by forces loyal to Syria's President Bashar al-Assad, in Salehin neighbourhood in Aleppo January 25, 2014. REUTERS/Hosam Katan (SYRIA - Tags: CIVIL UNREST CONFLICT SOCIETY)
A Free Syrian Army fighter adjusts his weapon as he rests with his comrades, at a front line at Aleppo International Airport
A Free Syrian Army fighter adjusts his weapon as he rests with his comrades, at a front line at Aleppo International Airport January 25, 2014. Activists say violent clashes are taking place in the neighborhood of Karam Altarab as forces loyal to Syria's President Bashar al-Assad attempt to secure the perimeter of Aleppo International Airport. REUTERS/Saad Abobrahim (SYRIA - Tags: CIVIL UNREST CONFLICT)
Free Syrian Army fighters rest at a front line at Aleppo International Airport
Free Syrian Army fighters rest at a front line at Aleppo International Airport January 25, 2014. Activists say violent clashes are taking place in the neighborhood of Karam Altarab as forces loyal to Syria's President Bashar al-Assad attempt to secure the perimeter of Aleppo International Airport. REUTERS/Saad Abobrahim (SYRIA - Tags: CIVIL UNREST CONFLICT)
Smoke rises behind a Free Syrian Army fighter at a front line at Aleppo International Airport
Smoke rises behind a Free Syrian Army fighter at a front line at Aleppo International Airport January 25, 2014. Activists say violent clashes are taking place in the neighborhood of Karam Altarab as forces loyal to Syria's President Bashar al-Assad attempt to secure the perimeter of Aleppo International Airport. REUTERS/Saad Abobrahim (SYRIA - Tags: CIVIL UNREST CONFLICT)
Free Syrian Army fighters rest at a front line at Aleppo International Airport
Free Syrian Army fighters rest at a front line at Aleppo International Airport January 25, 2014. Activists say violent clashes are taking place in the neighborhood of Karam Altarab as forces loyal to Syria's President Bashar al-Assad attempt to secure the perimeter of Aleppo International Airport. REUTERS/Saad Abobrahim (SYRIA - Tags: CIVIL UNREST CONFLICT)
A Free Syrian Army fighter runs with his weapon at a front line at Aleppo International Airport
A Free Syrian Army fighter runs with his weapon at a front line at Aleppo International Airport January 25, 2014. Activists say violent clashes are taking place in the neighborhood of Karam Altarab as forces loyal to Syria's President Bashar al-Assad attempt to secure the perimeter of Aleppo International Airport. REUTERS/Saad Abobrahim (SYRIA - Tags: CIVIL UNREST CONFLICT)