From Nixon to Clinton, Watergate to Whitewater, few have observed the ups and downs of presidential leadership more closely over the past 30 years. A respected and trusted adviser to both Democratic and Republican administrations, this public servant put country above personal politics. He is currently serving as editor-at-large of U.S. News & World Report, as director of the Center for Public Leadership at Harvard and as a TV commentator. Author of Eyewitness to Power: The Essence of Leadership, Nixon to Clinton, he offers an inside glimpse into the corridors of power and the leadership challenges presidents face.