It sounds wacky if you're on a mostly American or corporate media diet these last twenty years, but the Taliban has been fighting terrorists in their area of late. The situation in the middle east has failed to be as simple as GW Bush would have had us believe.
I don't support them obviously, but I at least recognize that this isn't really as zany and ironic as a typical "not the Onion" headline.
TL;DW: Now that the Taliban actually has the responsibility of holding a country together, they're no longer jihadist enough to satisfy the bloodlust of the other terrorist groups in the area, so they're now being attacked as traitors to the cause. Even worse for the people of the nation, these groups have begun attacking other nations like Russia to force another incursion into Afghanistan to topple the Taliban and leave a power vacuum so the more extreme groups can take over.