In pictures: Syrian conflict continues amid allegations of gas attack
Opposition accuses Assad regime of using chemical weapons against civilians in Damascus attack
A boy, affected by what activists say was a gas attack, is treated at a medical centre in the Damascus suburb of Saqba, August 21, 2013. Syria's opposition accused government forces of gassing hundreds of people on Wednesday by firing rockets that released deadly fumes over rebel-held Damascus suburbs, killing men, women and children as they slept.STRINGER/Reuters
People affected by what activists say was a gas attack are treated at a medical centre in the Damascus suburb of Saqba, August 21, 2013.STRINGER/Reuters
Children, affected by what activists say was a gas attack, breathe through oxygen masks in the Damascus suburb of Saqba, August 21, 2013.STRINGER/Reuters
A general view shows a deserted street that was hit by what activists said a gas attack in the Damascus suburb of Ain Tarma, August 21, 2013. Syria's opposition accused government forces of gassing hundreds of people on Wednesday by firing rockets that released deadly fumes over rebel-held Damascus suburbs, killing men, women and children as they slept.Bassam Khabieh/Reuters
A dead dog is seen at a site hit by what activists said was a gas attack in the Damascus suburb of Ain Tarma, August 21, 2013.Bassam Khabieh/Reuters
The bodies of victims of what activists said was a gas attack are laid on the back of a truck in Hamoria area, in the eastern suburbs of Damascus August 21, 2013. Syrian activists accused President Bashar al-Assad's forces of launching a gas attack in the Damascus suburbs of Ain Tarma, Zamalka and Jobar during fierce pre-dawn bombardment that killed more than 200 people on Wednesday, in what would, if confirmed, be by far the worst reported use of chemical arms in the two-year-old civil war.STRINGER/Reuters
People dig graves for the victims of what activist claimed was a gas attack in Hamoria area, in the eastern suburbs of Damascus August 21, 2013. Syrian activists accused President Bashar al-Assad's forces of launching a gas attack in the Damascus suburbs of Ain Tarma, Zamalka and Jobar during fierce pre-dawn bombardment that killed more than 200 people on Wednesday, in what would, if confirmed, be by far the worst reported use of chemical arms in the two-year-old civil war.Bassam Khabieh/Reuters
Lebanese and Syrian civilians take part in a candlelight vigil in solidarity with Syrian civilians killed by a gas attack in the suburbs of Damascus, in front of the offices of the U.N. headquarters in Beirut, August 21, 2013.MOHAMED AZAKIR/Reuters
A Syrian man who lives in Beirut holds up a placard during a vigil against the alleged chemical weapons attack on the suburbs of Damascus, in front the United Nations headquarters in Beirut, Lebanon, Wednesday, Aug. 21, 2013. Anti-government activists accused the Syrian regime of carrying out a toxic gas attack that is thought to have killed at least 100 people, including many children as they slept, during intense artillery and rocket barrages Wednesday on the eastern suburbs of Damascus that are part of a fierce government offensive in the area.Hussein Malla/The Associated Press
In this citizen journalism photo provided by the Local Committee of Arbeen, which has been authenticated based on its contents and other AP reporting, a man and woman mourn over the dead bodies of Syrian men after an alleged poisonous gas attack fired by regime forces, according to activists in Arbeen town, Damascus, Syria, Wednesday, Aug. 21, 2013. Syrian regime forces fired intense artillery and rocket barrages Wednesday on the eastern suburbs of the capital Damascus, in what two pro-opposition groups claimed was a poisonous gas attack that killed dozens of people.The Associated Press
Citizen journalism image provided by Aleppo Media Center AMC which has been authenticated based on its contents and other AP reporting, shows a Syrian boy holding an Arabic placard that reads: “If Syria's children bled petrol, the entire world would have intervened,” during a demonstration against the alleged chemical weapons attack at the suburbs of Damascus, in Aleppo, Syria, Wednesday, Aug. 21, 2013.The Associated Press
An Israeli nurse prepares a severely wounded Syrian to be taken to surgery at Ziv Medical Center in the northern town of Safed August 21, 2013. Some 140 Syrians who have been wounded in fighting in neighbouring Syria have been treated in Israeli hospitals since an uprising against Syrian President Bashar al-Assad began in March 2011, Israeli military spokesman Lieutenant-Colonel Peter Lerner said on Wednesday.HEALTH)BAZ RATNER/Reuters
A severely wounded Syrian lies in a bed at the Western Galilee Hospital in the northern Israeli city of Nahariya August 21, 2013. Some 140 Syrians who have been wounded in fighting in neighbouring Syria have been treated in Israeli hospitals since an uprising against Syrian President Bashar al-Assad began in March 2011, Israeli military spokesman Lieutenant-Colonel Peter Lerner said on Wednesday.BAZ RATNER/Reuters