Girls stand in line during a Red Crescent activity "Spring Childhood Program" for children living under siege in Duma
Girls stand in line during a Red Crescent activity "Spring Childhood Program" for children living under siege in Duma in the eastern al-Ghouta, near Damascus May 31, 2014. Picture taken May 31, 2014. REUTERS/Mohannad Saab (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Girls dance beside an activist during a Red Crescent activity for children living under siege in Duma
Girls dance beside an activist during a Red Crescent activity "Spring Childhood Program" for children living under siege in Duma in the eastern al-Ghouta, near Damascus May 31, 2014. Picture taken May 31, 2014. REUTERS/Mohannad Saab (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
A girl performs beside activists during a Red Crescent activity "Spring Childhood Program" for children living under siege in Duma
A girl performs beside activists during a Red Crescent activity "Spring Childhood Program" for children living under siege in Duma in the eastern al-Ghouta, near Damascus May 31, 2014. Picture taken May 31, 2014. REUTERS/Mohannad Saab (SYRIAPOLITICS UNREST - Tags: POLITICS CIVIL UNREST CONFLICT)
EXCLUSIVE-Syria bomber was Florida-born, raised in middle-class family
SYRIA-USA/BOMBER (EXCLUSIVE):EXCLUSIVE-Syria bomber was Florida-born, raised in middle-class family
Free Syrian Army fighters gather to rest in a safehouse in Old Aleppo
Free Syrian Army fighters gather to rest in a safehouse in Old Aleppo May 31, 2014. REUTERS/Sultan Kitaz (SYRIA - Tags: POLITICS CIVIL UNREST)
A Free Syrian Army fighter goes through a hole in the wall heading towards the frontline in Old Aleppo
A Free Syrian Army fighter goes through a hole in the wall heading towards the frontline in Old Aleppo May 31, 2014. REUTERS/Sultan Kitaz (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT TPX IMAGES OF THE DAY)
Smoke rises in a damaged market, caused by what activists said were mortar shells fired by forces loyal to Syria's president Bashar Al-Assad, in Kvrbtna in the eastern al-Ghouta
Smoke rises in a damaged market, caused by what activists said were mortar shells fired by forces loyal to Syria's president Bashar Al-Assad, in Kvrbtna in the eastern al-Ghouta, near Damascus May 31, 2014. REUTERS/Msallam Abd Albaset (SYRIA - Tags: POLITICS CIVIL UNREST)
A damaged wall, part of the Menagh airport that is controlled by rebels, is seen in the Aleppo Countryside
A damaged wall, part of the Menagh airport that is controlled by rebels, is seen in the Aleppo Countryside May 31, 2014. REUTERS/Hamid Khatib (SYRIA - Tags: POLITICS CIVIL UNREST)
Goats graze on grass in front of a damaged building in Aleppo Countryside
Goats graze on grass in front of a damaged building in Aleppo Countryside May 31, 2014. REUTERS/Hamid Khatib (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT ANIMALS)
Animals herd on a field in Aleppo Countryside
Animals graze on a field in Aleppo Countryside May 31, 2014. REUTERS/Hamid Khatib (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT ANIMALS)