From The Cutting Edge in Australia: "It was not your typical wedding. The guests shouted 'Jihad! Jihad!' and sang 'May a volcano shatter the infidels'. The wedding video, shot in Hamburg in the 1990s, featured many names that would later feature in inquiries into the September 11 attacks.
"Evidence of al-Qaeda's Hamburg cell was one of many things the CIA and the FBI overlooked or underestimated in the '90s, despite mounting evidence that Osama bin Laden was planning a big terrorist action on US soil following the 1993 attack on the World Trade Centre.
"American authorities caught snatches of the plan, but never saw the big picture until it was too late. In 1994, Philippines police arrested a terrorist who told of plans to crash a plane into the CIA headquarters in Langley, Virginia. The information was passed to America, but nothing happened.
"In Kuala Lumpur in 2000, al-Qaeda members met under the noses of CIA agents, who did not manage to bug their flat but did observe them repeatedly visiting Malaysia's twin towers. And all the while, al-Qaeda members were booking into American flying schools.
"This German documentary, made in the light of the joint congressional inquiry into September 11, interviews many key players. The last slip-up came on September 10, when the National Security Agency taped an al-Qaeda phone call: 'Tomorrow is zero house. Tomorrow the great game begins.' It was not translated until September 12."
A question: what has changed since then to keep the FBI and CIA from overlooking or underestimating evidence of radical Muslim activity since then?