The US Spent $83 Billion Training Afghan Forces. Why Did They Collapse So Quickly?

The United States has spent almost $83 billion equipping and training the Afghanistan National Defense and Security Forces, or ANDSF, since 2002, including providing almost $10 billion in aircraft and vehicles, according to the U.S. Special Inspector General for Afghanistan Reconstruction. https://www.defenseone.com/threats/2021/08/us-spent-83-billion-training-afghan-forces-why-did-they-collapse-so-quickly/184529/