>>509539380 (OP)Everybody in this thread is hilariously wrong.
First:
Afghanistan was a NATO operation. NATO failed in Afghanistan.
Why did NATO fail in Aghanistan?
Because they assessed the new democratic regime and its military to be stable enough to defend itself without NATO boots in the ground.
NATO invaded Afghanistan and decisively defeated the Taliban. Within months, the population centers were secured. Within a few years, the mountains were cleared. The mountains beat the soviet union, but they were cleared out before most NATO countries even knew they were at war.
The Taliban fled to Pakistan and there they stayed. They attempted to reinvade the country several times but failed each time. Eventually, they just stopped.
3 years of Afghanistan saw combat. After that it was a policing and occupation mission for a decade. This was not costly or high-intensity occupation. The populace was largely indifferent to occupation--most of them had grievances with the Taliban and the rest were basically bribed with development money.
For those 10 years, nobody ever got any fucking action. At most, militants would sneak across the border in groups of 2 or 3 and try to car bomb a school or plant IEDs on the road. Getting shot at was so rare it earned you bragging rights, and largely the infiltrating groups would only shoot at you from outside firing range, to try and bait you towards an IED. There was no real combat and next to no cost beyond the salaries of the soldiers and the price of gas/maintenance.
So NATO started leaving, bit by bit. The US were last to leave because they had taken on the burden of arming and training the new Afghan state's military. Eventually they said "good enough," signed a ceasefire with the Taliban and left.
As soon as the ceasefire was signed, the Taliban reinvaded again, beat the new government and took power.