![2017_EME_syria_chemical](/sites/default/files/multimedia_images_2017/screen_shot_2017-02-10_at_12.31.11_pm_005.png)
A still from video shows green smoke from a chlorine attack by Syrian government forces in the Daheert Awwad neighborhood of Aleppo, Syria on November 22, 2016. © 2016 Aleppo Media Center
A still from video shows green smoke from a chlorine attack by Syrian government forces in the Daheert Awwad neighborhood of Aleppo, Syria on November 22, 2016. © 2016 Aleppo Media Center