U.S. Air Base in Iraq hit with mustard gas after major air strike destroys chemical weapons facility near Mosul. |Islamic State (IS) militants may have fired a chemical rocket at U.S. troops in Iraq at the Qayyarah Air Base, which is south of Mosul. No soldiers were injured or have displayed symptoms. U.S. troops went to inspect the shell after it landed. Noticing a substance described as “tar-like” “black” and “oily,” the soldiers had it chemically analyzed. While the shell tested positive for a mustard agent, officials categorized it as “low grade” and “ineffective.” In sufficient quantities, mustard agents can … Continue reading ISIS Suspected of Chemical Attack on US Troops