Cheney - Changing His Mind, Convincing Bush
"...In early 2002, Cheney dispensed with the policy arguments or taking down Saddam in favor of a far more personal appeal. He said simply that he had been part of the team that created what he now saw as a flawed policy -- leaving Saddam in power at the end of the Gulf war -- and now Bush had a chance to correct it.
His plea was enormously successful. 'The reason that Cheney was able to sell Bush the policy is that he was able to say, "'I've changed...I used to have the same position as [James] Baker, [Brent] Scowcoft, and your father -- and here's why it's wrong.'"
From article by Franklin Foer and Spencer Ackerman, "The New Republic," December 1, 2003