A civil defense member breathes through an oxygen mask, after what rescue workers described as a suspected chemical attack in the town of Khan Sheikhoun in rebel-held Idlib, Syria April 4, 2017.
© 2017 Reuters
A civil defense member breathes through an oxygen mask, after what rescue workers described as a suspected chemical attack in the town of Khan Sheikhoun in rebel-held Idlib, Syria April 4, 2017.