A still from video shows green smoke from a chlorine attack by Syrian government forces in the al-Fardous neighborhood of Aleppo, Syria on December 8, 2016. © 2016 Aleppo Media Center
A still from video shows green smoke from a chlorine attack by Syrian government forces in the al-Fardous neighborhood of Aleppo, Syria on December 8, 2016. © 2016 Aleppo Media Center