I'm sorry, doesn't Pakistan have the bomb? A naked threat like this, I have doubts that it was like this, I'll bet it was more like "We are going to destroy the Taliban, and if you get in our way, and the Taliban are given safe haven in Pakistan, we will bomb Pakistan back to the stone age".
I always believed that we told him we knew where all of his nukes were located and would take them all out, as well as lots of other stuff. I remembered Musharraf came out of the meeting white as a ghost.