From the SWJ roundup

http://www.washingtonpost.com/world/...cbb_story.html

Islamic State militants allegedly used chlorine gas against Iraqi security forces

Dizzy, vomiting and struggling to breathe, 11 Iraqi police officers were rushed to a government hospital 50 miles north of the capital last month. The diagnosis: poisoning by chlorine gas. The perpetrators, according to the officers: Islamic State extremists.

The chlorine attack appears to be the first confirmed use of chemical weapons by the Islamic State on the battlefield. An Iraqi Defense Ministry official corroborated the events, and doctors said survivors’ symptoms were consistent with chlorine poisoning.
Overall the use has not been to effective in either Syria or Iraq, but is producing terror, which is completely understandable.

http://www.theatlantic.com/internati...eapons/381920/

Has ISIS Crossed a New Red Line?

Speaking of the three Iraqi accusations, National Security Council spokesman Alistair Baskey told The New York Times: "We are aware of the reports but cannot confirm details and are seeking additional information. The use of chlorine as a chemical weapon is an abhorrent act. These recent allegations underscore the importance of our work to eliminate chemical weapons in this volatile region.”

If confirmed, these attacks would be the first chemical weapons attacks in Iraq in several years. At the State Department on Friday, U.S. Secretary of State John Kerry said that while the reports won't necessarily shift America's policy vis-à-vis ISIS, “it obviously can affect tactical decisions within that strategy.”
I suspect we will continue seeking additional information for as long as possible to avoid another red line.