Strictly? You do realize that the attack on us had nothing to do with us assisting Mujahedin. Unless you want to be one of the dopes criticizing the gov. for not being psychic in knowing that the Mujahedin would have eventually done this. Many, however in the Mujahedin during that time are quite opposed to the Taliban and those that have attacked us. I don't really see the point in addressing that.
You do realize that we were in a cold war with the Soviets, don't you?
That is not possible to ascertain unless you have a crystal ball. What might have happened without our intervention there is a matter of speculation. One consequence of that meddling was that the situation was created which fostered a regime that embraced terrorists in that place.
Now lets see if we can't steer your little self back on topic for yet another try. You advocated the invasion and occupation of a foreign country and the establishment of a puppet regime. You have avoided discussing that concept even though you introduced it. Do you embrace that idea or abandon it?