A man breathes through an oxygen mask as another one receives treatments, after what rescue workers described as a suspected gas attack in the town of Khan Sheikhoun in rebel-held Idlib. Ammar Abdullah / Reuters
A man breathes through an oxygen mask as another one receives treatments, after what rescue workers described as a suspected gas attack in the town of Khan Sheikhoun in rebel-held Idlib. Ammar AbdullaShow more
Syria year in review: remembering the Khan Sheikhoun chemical attack
A mourning father forced to bury his wife and children
