Amani and her twin daughters Masa and Malaz at a camp for displaced persons in northern Syria after fleeing Douma, a town near Damascus, where they say they suffered a chlorine attack.
Displaced Syrians, who fled their homes in the city of Deir ez-Zor, carry boxes of United Nations aid at a camp in Syria's northeastern Hassakeh province in February.
Delil Souleiman/AFP/Getty Images
This image released early Sunday by the Syrian Civil Defense White Helmets shows a child receiving oxygen through respirators following an alleged poison gas attack in the rebel-held town of Douma, near Damascus, Syria.
Syrian Civil Defense White Helmets via AP
This image made from video shows a medical worker administering oxygen through respirators following an alleged poison gas attack in Douma. The Syrian government denied the allegations.
Syrian Civil Defense White Helmets/AP