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What role should America play in the world? What key challenges face us in the century to come, and how should we define our national interests? These questions have been given electrifying new sig...
John D. Donahue is Raymond Vernon Lecturer in Public Policy at Harvard University's Kennedy School of Government. Joseph S. Nye Jr. is University Distinguished Service Professor at the Harvard Kennedy School and a former assistant secretary of defense for international security affairs and chair of the National Intelligence Council.