This Is Why America Failed to Rebuild Afghanistan

This Is Why America Failed to Rebuild Afghanistan | War Is Boring: 
The U.S. reconstruction of Afghanistan was one of the worst foreign policy failures in American history. Taxpayers have wasted billions on roads that don’t work, buildings that don’t exist and weapons Afghan soldiers don’t know how to use.
The damage is done, the cash spent and money pocketed. All that’s left now is assessment. What went wrong and how do we make sure this never happens again?