The promise to retaliate against any use of any kind of WMD had long been a part of our deterrent posture, until it wasn't.
Now it is again. With a National Security Team of Trump, "fire! fire sabot!" McMaster, and Mad Dog, deterrence means something.
With a National Security Team of Trump, “fire! fire sabot!” McMaster, and Mad Dog, deterrence means acting as ISIS’ air force.