Former U.S. Secretary of Defense Donald Rumsfeld gestures while speaking to the audience during an event to kick off his "Known and Unknown" book tour, on Wednesday Feb. 9, 2011, at the National ... more 
Former U.S. Secretary of Defense Donald Rumsfeld gestures while speaking to the audience during an event to kick off his "Known and Unknown" book tour, on Wednesday Feb. 9, 2011, at the National Constitution Center in Philadelphia. less 
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Associated Press | Photo By Joseph Kaczmarek
Thu, Feb 10, 2011 4:02 PM EST