deep in the article .”With the fall of massive areas in northern and western Iraq, ISIS was able to control a key area north of Baghdad that used to produce chemical weapons under Saddam. However, the site was empty. The UN inspection teams had destroyed and cleared the site completely from the industrial tools and the main materials that could be used to make chemical or biological weapons, according to the UN teams’ reports.”
You should use the sarcasm tag or didnt you read about the chemical bunkers that they wouldnt go near due to damage and suspected leakage.