While the country isn’t all roses and not every goal was accomplished, how did we overthrow the Taliban so relatively quickly? Even if we had allies in the northern alliance, they were less than 10% of the country.
We were thousands of miles away attacking a landlocked country. We sent in a very small number of ground troops (although we used tons of planes and missiles), yet succeeded where the Soviets, et al, had failed. I was dreading a long-term guerilla war in the mountains with Stinger missiles… then, the next thing I knew Kabul fell!