It was hardly an expansion. The borders are porous, the Taliban was cozy with the ISI, and many Afghanis live in waziristan.Um no the Taliban began expanding into Pakistan in 1998.
Totally wrong. ALQ was allowed to stay in Aghanistan by Mullah Omar, and Osama paid allegiance to him because he didn't want to relocate. Osama had no role in the govt.AQ was a part of the Taliban government.