There were differences in the intelligence community as to what the relationship was [between Saddam Hussein and al-Qaeda]. To my knowledge, I have not seen any strong, hard evidence that links the two.
he frequently raised the issue within the administration and "should have been even more insistent" when his advice was spurned because the situation in Iraq might be different today. "The single most important change -- the one thing that would have improved the situation -- would have been having more troops in Iraq at the beginning and throughout" the occupation