WHO WAS BEHIND 9/11 September 11th or 9/11) were a series of coordinated suicide attacks by al-Qaeda upon the United States on September 11, 2001. . On that morning, 19 al-Qaeda terrorists hijacked four commercial passenger The September 11 attacks (often referred to as jet airliners. . The hijackers intentionally crashed two of the airliners into the Twin Towers of the World Trade Center in New York City, killing everyone on board and many others working in the buildings. Both buildings collapsed within two hours, destroying nearby buildings and damaging others. The hijackers crashed a third airliner into the Pentagon in Arlington, Virginia, just outside Washington, D.C . The fourth plane crashed into a field near Shanks Ville in rural Pennsylvania after some of its passengers and flight crew attempted to retake control of the plane, which the hijackers had redirected toward Washington, D.C. There were no survivors from any of the flights. CAUSES OF 9/11 • Five years on, everyone has a theory about the real causes of 9/11. They range from the nutty (it was the US government) to the plausible but flawed (a response to foreign occupation) to the credible (collateral damage from a clash within Islam) • No event in recent times has produced as many explanations as the 11th September attacks five years ago. Within the space of an hour, al Qaeda inflicted more direct damage on the US than the Soviet Union had done throughout the cold war, a cataclysm seen by more people than any other event in history. Yet it took only 19 men armed with small knives to destroy the World Trade Centre, demolish a wing of the Pentagon and kill 3,000 people. This mismatch has led some— especially in the Muslim world—to seek a deus ex machine to explain what otherwise appears inexplicable. The usual suspects have been assembled on 9/11’s grassy knoll: the Jews were behind the attacks; the US government engineered them; the “Cheney-Bush energy junta” planned them so that they could grab the oil fields of central Asia, and so on. Twin towers The first evidence of intentional demolition is the sheer size and power of the two buildings. It is well known that the Twin Towers were designed to withstand the impact of jumbo jets. Two hits from Boeing 707 jumbo jets, in fact, is what the architects famously said the towers could withstand. And it is true. The buildings seemed to do just fine after the impact. So the official story had to quickly turn, like with Building 7, to the 'intense' inferno as cause for the Towers' eventual demise.