The Special Inspector General for Afghan Reconstruction (SIGAR) some years ago identified “$15.5 billion of waste, fraud, and abuse… in our published reports and closed investigations between SIGAR’s inception in 2008 and December 31, 2017,” and added an additional $3.4 billion in a subsequent review. All told, “SIGAR reviewed approximately $63 billion and concluded that a total of approximately $19 billion or 30 percent of the amount reviewed was lost to waste, fraud, and abuse.”
Thirty percent! If the overall cost of the war was, as reported, $2 trillion (about $300 million per day for 20 years), a crude back of the envelope calculation for the amount lost to fraud during the entire period might be $600 billion, an awesome sum.