Former White House press secretary Scott McClellan writes in a new memoir that the Iraq war was sold to the American people with a sophisticated “political propaganda campaign” led by President Bush and aimed at “manipulating sources of public opinion” and “downplaying the major reason for going to war…”

The book, coming from a man who was a tight-lipped defender of administration aides and policy, is certain to give fuel to critics of the administration, and McClellan has harsh words for many of his past colleagues. He accuses former White House adviser Karl Rove of misleading him about his role in the CIA case. He describes Secretary of State Condoleezza Rice as being deft at deflecting blame, and he calls Vice President Cheney “the magic man” who steered policy behind the scenes while leaving no fingerprints.

In a chapter titled “Selling the War,” he alleges that the administration repeatedly shaded the truth and that Bush “managed the crisis in a way that almost guaranteed that the use of force would become the only feasible option.”

McClellan, once a staunch defender of the war from the podium, comes to a stark conclusion, writing, “What I do know is that war should only be waged when necessary, and the Iraq war was not necessary.”

The criticism of Bush in the book is striking, given that it comes from a man who followed him to Washington from Texas.

Bush is depicted as an out-of-touch leader, operating in a political bubble, who has stubbornly refused to admit mistakes. McClellan defends the president’s intellect — “Bush is plenty smart enough to be president,” he writes — but casts him as unwilling or unable to be reflective about his job.

Of course, mini-clones still embrace the mistakes and say the war is “necessary and just” and should be continued.