One more correction. There is not ONE war the Afghans have ended in a stalemate (forget about winning) without outside support. They lost to the British, Soviets dominated them and Americans did not lose a SINGLE tactical battle against them. These are historical facts.
All the talk of "graveyard of superpowers" etc. is propaganda. The superpowers lost interest in a land that gives little and is landlocked. What is beyond Afghanistan is what was of interest to the occupying powers, not Afghanistan itself. In an odd way, they were lucky that they got invaded because whatever development/infrastructure you see in Afghanistan today was built by the Soviets and Americans. On their own, they could not muster much. Also remember, our people laid down their lives to sustain the original Muj who eventuallly gave way to these thankless Takfiri bastards.
So all those who try to warn and scare Pakistan with this need to realize what happened on the ground. Not that Pakistan has any interest in "invading" Afghanistan. Just stating facts here for posterity sake. Hope better sense prevail in the minds of these Takfiri bastards.