@thomas - reason why Taliban was not reined in is so that India can't influence Afghanistan.
Northern Alliance were friends of India and Russia.
That's why the distinction between good Taliban and Bad Taliban. Good Taliban are the ones who can help keep India out of Afghanistan by insisting no kafir sets foot in Muslim lands
Also - training camps for LeT, JeM etc. were established in Afghanistan as well as Pak Kashmir. Pakistan decided to fuel the Kashmir conflict using these Islamic warriors. The world was paying no attention. Slowly these groups got out of hand.
IC 814 hijacking was a dress rehearsal for 9/11. Omar Sheikh and the current JeM chief were released after the hijacking. Still the world pays no attention to the problem - It's only India that was suffering. Pakistan watches on gleefully!
9/11 - World changes. Suddenly Pak can't just sit and watch. India gets support for it's line.
Mumbai attacks - UShas learnt it's leason - copycat attacks will be launched in the West - FBI studies the attacks calls for Pak to catch the culprits. Something that was missing after IC814 hijack