Having watched "The path to 9/11" the other day. And that was based on facts (though obviously dramatised for TV) It seems the CIA and FBI were involved in too many power struggles, and that apathy/arrogance of the US further up the chain of command led to these terrorists having their day.

They knew about them, and they could of killed/arrested/captured some of them. But they chose not to act. And thats as far as US Government involvement went. Not direct, but indirect as above.

As Chip says, they made the most of a bad situation.

Dont expect me to waste time watching these crappy half truth "documentaries" showing how George Bush was at the controls of UA175

Oh and as an edit. IF somebody wanted to demolish the WTC with explosives, why not just use a sodding great truck bomb in the underground car park. Why go to all the hassle of getting aircraft. Everyone knew the '93 attack was designed to drop the towers, so IF you wanted to blame Islamic terrorists just replicate the attack, but make it successful! Hell with a little time, you could make it really neat Fred Dibnah style. Even make Tower 1 hit Tower 2 on the way down. Carefully taking out WTC7