How? They have great support from JI and other cronies. They will not be eliminated so easily. You can kill the Taliban, how will you kill their ideology which has enormous support.
I believe their Ideology is already in Dying stage , Their own people have left them & are now Fighting against them , Their Fodders are being destroyed quickly & they have no manpower to replace them, they are right now a running Goat , and will be captured eventually.