… it literally isn’t. The Taliban wasn’t a ‘splinter group’ of the Mujahedeen government, it was a largely Pakistani-funded and supported initiative whose even most embryonic form post-dates the entire Soviet-Afghan War in creating a paramilitary with the express purpose of overthrowing the previous Mujahedeen government (a goal in which it succeeded).
So, it’s still fallout from that.
How is it fallout from that?
Because it’s formed from a splinter group of the previously installed government?
… it literally isn’t. The Taliban wasn’t a ‘splinter group’ of the Mujahedeen government, it was a largely Pakistani-funded and supported initiative whose even most embryonic form post-dates the entire Soviet-Afghan War in creating a paramilitary with the express purpose of overthrowing the previous Mujahedeen government (a goal in which it succeeded).