Zach Abels Sun, Jun 4, 2017, 10:00 AM
Editor’s Note: When the United States invaded and occupied Iraq in 2003, it found itself woefully unprepared for the insurgency that followed. It took years—and many lives lost—for the U.S. military to relearn how to fight insurgents, but the results were stunning. By the end of the decade, al-Qaeda in Iraq and other violent groups were on the run, and it looked like Iraq was on the path to stability. Zach Abels at the National Interest, however, warns that much of this valuable knowledge is being lost.