Al said: Bush's assertions of ties between Bin Laden and Osama have been discredited repeatedly. That makes sense, since Bin Laden is the most secular leader in the arab worlds, and Osama is a religious fundamentalist.

The sentence in red implies that fundamentalists would not support a secular regime. Since suicide bombers are fundamentalist AND are supporting Sadaam's regime, your inference is WRONG.

BTW, as a well read person, you know that reports ARE currently surfacing of ties between Iraq and Al Qaeda. As far as I know, the latest reports have NOT been discredited. Here's a link to one such report:
http://www.foxnews.com/story/0,2933,82751,00.html