And more to the point, the reason and the cause:
The 911 Commission, in it's final report, determined that the source of the financing of the 911 terror attacks on the United States - speaking directly to the motive, "... is ultimately of little consequence..."
More Commission reasoning:
The 911 Commission concludes in it's report that key FAA personnel were "hopeless bunglers deserving prosecution for criminal neglegence" and goes on to claim that they cannot find any particular person deserving of blame for the disaster. The commission praises the FAA for landing thousands of airliners across the United States when it was ordered to do so, a task unprecedented in aviation history - yet the agency failed miserably in contacting the military about an errant aircraft - a task that it preforms regularly. The Commission further claims that the military must rely solely on the FAA for radar services, blatantly ignoring the independent military radar that dwarfs the civilian radar network - both in scope and sophistication. In the nine months preceeding 911, the FAA had contacted the military - and NORAD had intercepted errant aircraft 67 times. Average time to intercept: 16 minutes. In the previous year, there had been over 120 such events, all with comparable intercept times.
A brief recap to frame the conclusions:
The collapse of the World Trade Center Towers was an unexpected and immense benefit to a group of insiders, and they were not Muslim fanatics.
The wide-spread, highly unusual activities in the WTC Towers in the months before the attacks is ignored by the Commission.
The members of The Project for a New American Century, several that occupied the highest positions of political power, suddenly realized previously unimagined public support for their agenda, both in the US and on the world stage.
The entire military complex of the United States would would be substantially expanded. Afghanistan and Iraq would be attacked, invaded and occupied.
The critical causes of the failure to respond to the 911 attacks by the US military were complied only after the key officials' third attempt to do so - and the members of the 911 Commission knew it.
These repeated contradictions of substance - the central aspect of the central event - by the highest level officials of the Pentagon and NORAD prior to the final report's release were not mentioned by the Commission.
Vice president Dick Cheney was at the epicenter of Command and Control, yet he was allowed to brief the Commission with George Bush at his side, neither were sworn under oath and no record was allowed. Notes taken by Commission members were collected by the Secret Service at the briefing's conclusion.
Vice president Dick Cheney's claims of his actions on 911 are sharply contradicted by FAA Chief Norman Mineta's critical, sworn testimony, which is ignored by the Commission.
Sibel Edmund's detailed, scathing and verified indictment of deliberate, repeated FBI supression of crucial evidence is ignored by the Commission.
The FBI supervisors that halted investigations into suspicious, hostile Arab men that later allegedly became hijackers were ignored by the Commission.
The previous associations of several of the alleged hijackers with federal officials and agencies were ignored by the Commission.
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