1/8Activists wear gas masks as they look for dead bodies and collect samples to check for chemical weapon use in Zamalka, Damascus, August 22, 2013.
2/8An activist wearing a gas mask stands next to a dead dog as he looks for bodies to collect samples to check for chemical weapon use, in Zamalka, Damascus, August 22, 2013.
3/8Syrian activists inspect the bodies of people they say were killed by toxic gas near Damascus, August 21, 2013.
4/8A man sits in a hospital near two children who activists say were affected by toxic gas near Damascus, August 21, 2013.
5/8People, affected by what activists say is toxic gas, are treated at a hospital in the Duma neighborhood of Damascus August 21, 2013.
6/8A youth, affected by what activists say is toxic gas, is treated at a hospital near Damascus, August 21, 2013.
7/8A Syrian military soldier holds his Ak-47 with a sticker of Syrian President Bashar Assad and Arabic that reads, "Syria is fine," as he stands guard at a check point on Baghdad street, in Damascus, August 21, 2013.
8/8A Syrian military soldier checks the trunk of a car at a check point on Baghdad street, in Damascus, August 21, 2013.
