The purpose of this research is to explore the role Japanese ambassadors to the United States has played in diplomatic relations between the two nations in the postwar period. They are the only diplomats who are official representatives of Japan and are stationed permanently in the U. S. Despite this, little significant research on this topic has been conducted. Considering the authority of this post, the function as main official channels in Japan's diplomacy toward the U. S., and the role individuals can play in international relations, the importance of research about these figures must be acknowledged.
This study empirically shows that the significance and limitations in the
regular functions of Japanese ambassadors to the U. S. First, they supported negotiations and policy-making of the home government by information gathering and reporting. Second, they offered opinions to their home government and thus affected policy-making. Third, they relayed messages of the home government to representatives of the U. S. government precisely and implied nuances by unofficial statements. Fourth, they were involved in a part of negotiations or exercised jurisdiction over entire negotiations. Fifth, they conducted public diplomacy on behalf of Japan toward the American public. On the other hand, as for their limitations, first, their intelligence sources in the U. S. tended to slant to diplomatic circles. Second, their jurisdictions were eroded by other actors of Japan.
The author also clarifies that the role of Japanese ambassadors to the U. S. contained not only implementation of the regular functions but also that of the
irregular functions by the unique ambassadors. First, they tried to
taking the lead in policy-making. Second, they conducted
enlightenment of public opinion back home. Third, they implemented
lobbying on behalf of Japan in the Congress. At the same time, first, the irregular functions often faced the rejections from their home government and thus it seldom accomplished. Second, the irregular functions included the risks turning into political issues even if it could get confirming from the home government.
Why did the role of Japanese ambassador to the U. S. change between regular and irregular, and face limitations? First, it is based on the
personalities of ambassador. The second factor is the
degree of autonomy from the home government which depended on the political situation at the time, presenting ambassadors with a dilemma as to that degree. Third, the
change in the dynamics of Japan-U. S. relations led to the diversification of issues and actors and thus the ambassadors had to address these changes and interact with these new actors. The results of this research conclude that Japanese ambassadors to the U. S. played a significant and wide range of roles in Japan-U. S. relations through their regular and irregular functions even though these were some limitations.
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