May 7: The U.S. Department of Defense incorporated work by ISW into an interagency report to Congress on the mission to defeat ISIS in Iraq and Syria. The 17th Lead Inspector General Report on Operation Inherent Resolve cited ISW’s research on forces operating in Northern Syria. The U.S. Department of Defense Inspector General (IG) publishes this quarterly report with support from the U.S. State Department and Agency for International Development Inspectors General.