With their backs to the wall, ISIS fighters in the city of Mosul are using poison gas to try and hold off Iraqi forces.
The Daily Telegraph: Iraq troops face Isil chemical attacks in final battle for Mosul

With their backs to the wall, ISIS fighters in the city of Mosul are using poison gas to try and hold off Iraqi forces.
With fighting still ongoing on the other side of the river, some semblance of normality is slowly returning to eastern Mosul.
The battle to retake Mosul from the so-called Islamic State is far from over. But the liberated zones feel very liberated indeed.
Attacks on Sinjar highlight dangers posed by group’s homemade gas-filled weapons with Kurdish fighters ill-equipped to protect themselves.
As Iraqi forces push into ISIS-held Mosul, desperate civilians are on the run from snipers, booby traps and suicide bombers.