There's another excellent summary of facts about 9/11 from Andrew Mills at OpEd. I see from the comments some of you have already discovered it! Here's a taste (the article is too long to replicate here in its entirety, but I recommend it):

The Administration Ignored the Threats

Despite the Administration's rhetoric that they had "no warnings" leading up to 9/11, it has become abundantly clear that key Administration officials were made aware of a vast array of al Qaeda threats and warnings that existed in years prior, and more importantly, in the weeks leading up to September 11, 2001. Here not only the Administration, but also the 9/11 Commission, failed to connect the dots.