Among experts, the concept of “public diplomacy” is getting more ambiguous and problematic. It has been long time since such a new concept as “New Public Diplomacy” has come into vogue, with the multiplication of non-state actors and the emergence of new digital technologies. However, at the time when diplomacy has become more multidimensional and public engagement has become the “whole of government diplomacy”, what are the quintessential properties of “public diplomacy” per se? If “diplomacy” is an art of shaping realities and setting agendas, or negotiating over norms and institutions (or boundaries and categories at large), how is it different from “public diplomacy?”  Japan Scholar Yasushi Watanabe explores these questions in his newest piece, "Public Diplomacy and the Evolution of U.S.-Japan Relations."  Click here to download a PDF.