Co-Director of the Center for Public Leadership David Gergen moderates a conversation with Director of the Belfer Center of Science and International Affairs Graham Allison, Harvard Business School Professor of Business Administration Nancy F. Koehn and Harvard Kennedy School University Distinguished Service Professor Joseph S. Ny, Jr. on the Presidential Leadership and the Rise of American Power. The panelists discussed the history of the American presidency, reaction to crises and the nature of leadership itself.