What the fall of Afghanistan to the Taliban tells you about the limits of American power is that we can’t change the ethos of other countries — that is well beyond our capability. We can’t take a deeply conservative, male-oriented, and archly Islamic country and make it over into our image of a Western democracy with equal rights for everyone and freedom of religion. And we shouldn’t try to. It’s bound to fail.
They are all now blaming Biden for this defeat, but, to be honest, he was a very late player in this comedy of errors. The initial error was to expand our enemies list from al-Qaeda to the Taliban. The Taliban never attacked the US; al-Qaeda did.