America went into Afghanistan backing the losing side of the civil war. When the new government was put into place though, we were backing a government that didn't have the ability to impose it's monopoly on the legitimate use of coercive force. It was common knowledge that once you were five miles outside of Kabul, it was total lawlessness. America was getting shaken down in convoy protection rackets, and we hit a point where we were pumping 300 million dollars a day into this war, which we were fighting mostly with hired mercenaries like G4S security.
I propose that the US should have pursued a bipartisan government with the Taliban and the Northern Alliance prior to pulling out of the country.