Even Richard Perle is now saying he wouldn't have advocated going to war if he knew then what he knows now:

Richard Perle, who chaired a committee of Pentagon policy advisers early in the Bush administration, said had he seen at the start of the war in 2003 where it would go, he probably would not have advocated an invasion to depose Saddam Hussein. Perle was an assistant secretary of defense under President Reagan.

"I probably would have said, 'Let's consider other strategies for dealing with the thing that concerns us most, which is Saddam supplying weapons of mass destruction to terrorists,'" he told Vanity Fair magazine in its upcoming January issue.

Joe Lieberman continues to say he would vote for the war again today.