Bush says Iraq had nothing to do with September 11 - then why did we invade?

From E&P:

Bush also tied Iraq to 9/11, and then backed off, when asked about the effects of the U.S. invasion as witnessed today.

"You know, I've heard this theory about, you know, everything was just fine until we arrived and, you know, kind of -- the 'stir up the hornet's nest' theory," Bush said. "It just doesn't hold water as far as I'm concerned. The terrorists attacked us and killed 3,000 of our citizens before we started the freedom agenda in the Middle East."

Asked by a reporter what Iraq had to do with 9/11, Bush replied, "Nothing, except for it's part of -- and nobody's ever suggested in this administration that Saddam Hussein ordered the attack. Iraq was a -- Iraq -- the lesson of September the 11th is take threats before they fully materialize, Ken."