Col. David Johnson, U.S. Army retired, was a principal researcher at the nonprofit, nonpartisan Rand Corp. and an adjunct scholar at the Modern War Institute at West Point, New York. From 2012 to 2014, he founded and directed the Chief of Staff of the Army Strategic Studies Group for Gen. Raymond Odierno. Johnson drafted this piece before he died in October 2022. His wife, Wendy Frieman, with help from several friends and colleagues, completed it.