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Former president George H.W. Bush admits in his upcoming biography that he disagreed with how his son's administration reacted to the 9/11 terrorist attacks.

The 91-year-old patriarch pulled no punches when he divulged to biographer Jon Meacham what he thinks of former Vice President Dick Cheney and Secretary of Defense Donald Rumsfeld for walking all over George W. Bush, according to a preview from the book.

The senior Bush said both administration officials embraced hostile attitudes that affected how influenced America's foreign policy and the U.S. response to Saddam Hussein.

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