Stars and Stripes
The United States spent more than $2 billion since 2008 on buildings and vehicles in Afghanistan that are now either in disrepair, not being used as intended or completely unusable, according to a recent review by a government oversight group…
“Of the nearly $7.8 billion in capital assets reviewed in its prior reports, Special Inspector General for Afghanistan Reconstruction…SIGAR identified about $2.4 billion in assets that were unused or abandoned, had not been used for their intended purposes, had deteriorated, or were destroyed,” the report said…
I doubt there is any branch of the United States government that can waste more money than our military. There probably is a secret department in the Pentagon set aside just for the creation of excuses for mismanagement and cost overruns.
Eideard 
All in the service of the GOUSA’s corporate sponsors. I’m sure they see it as an important investment. I’d have though the sums involved to be a lot more.
“China Has a BIG Plan for Post-U.S. Afghanistan—and It’s Worth Billions” https://www.thedailybeast.com/china-has-a-big-plan-for-post-us-afghanistan-and-its-worth-billions
“U.S. Bagram legacy nothing but “piles of scrap” https://www.globaltimes.cn/page/202107/1227729.shtml
“US Trashes Leftover Gear, Angering Afghan Scrap Dealers : Even the most innocuous items were cut to bits before being sold” https://www.newser.com/story/305982/next-phase-of-afghan-withdrawal-all-that-scrap.html
“The many US blunders that contributed to looming disaster in Afghanistan” (opinion by Peter Bergen) https://www.cnn.com/2021/07/04/opinions/afghanistan-us-withdrawal-looming-disaster-bergen/index.html
7AM MDT, tomorrow morning, 6th
“Why Americans Can’t Have Nice Things” (David Cay Johnson) https://www.dcreport.org/2021/08/17/why-americans-cant-have-nice-things/
7AM MDT, tomorrow morning, 23rd