The attacks of September 11 were a pretext to a war already under consideration, Gul said. "I think some of the neocons, who were very close to President [George W.] Bush, they wanted that he could embark on a universal adventure of Pax Americana, and they thought that the world was lying prostrate in front of them," he said. The 2001 terrorist attacks helped win the public support for the neocon plans, he said.

There was no legitimate reason for the United States to attack Afghanistan, Gul said, because the FBI had no solid evidence that Osama bin Laden was involved in the attacks on New York and Washington. "Why has not a single individual connected to 9/11 been caught in America so far, and why hasn't Osama bin Laden been charged?" With no evidence anyone in Afghanistan was involved, there is no way to legitimize the U.S. occupation, Gul said."

http://afghanistan.blogs.cnn.com/2010/08/06/ex-pakistan-spy-chief-afghanistan-war-lost-cause/
Ex-Pakistan spy chief: Afghanistan war 'lost cause'