“Multiple sources, including Lawrence Wright’s book The Looming Tower, make clear that the Taliban was a reluctant host to al Qaeda in the 1990s and felt betrayed when the terrorist group repeatedly violated agreements to refrain from issuing inflammatory statements and fomenting violence abroad. Then the al Qaeda-sponsored 9/11 attacks — which the Taliban had nothing to do with — led to the toppling of the Taliban’s regime. Given the Taliban’s limited interest in issues outside the ‘AfPak’ region, if they came to power again now, they would be highly unlikely to host provocative terrorist groups whose actions could lead to another outside intervention. And even if al Qaeda were able to relocate to Afghanistan after a Taliban victory there, it would still have to operate under the same siege situation it presently enjoys in what Obama calls its “safe haven” in Pakistan.
“The very notion that al Qaeda needs a secure geographic base to carry out its terrorist operations, moreover, is questionable. After all, the operational base for 9/11 was in Hamburg, Germany. Conspiracies involving small numbers of people require communication, money, and planning — but not a major protected base camp.”