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A former White House colleague of Scott McClellan's challenged his assertion in his book that President Bush did not review all the facts before going to war in Iraq, saying, "I don't think he was in a position to know this."

"Scott McClellan was not the press secretary. He was the deputy press secretary who dealt with domestic issues," said Dan Bartlett, a former White House counselor. "So, he would not ... have [had] access to the types of meetings and deliberations that the president participated in."

McClellan's new memoir, "What Happened: Inside the Bush White House and Washington's Culture of Deception," is scheduled for publication Monday. Read full article »

CNN's Ed Henry contributed to this report.

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