Mr. Sopko said the single costliest reconstruction effort for U.S. taxpayers was training and equipping the Afghan National Defense and Security Forces (ANDSF), which cost $89 billion.
State Dept. sought 'wholesale' redactions of Afghanistan reports, watchdog says
There were numerous instances of American contractors essentially paying insurgent groups with U.S. tax dollars, Mr. Sopko said.
As Kabul fell, U.S. watchdog noted 'bleak' future with al Qaeda on the rise