古典外交論者と戦間期国際秩序-信夫淳平の場合-

日本外交の国際認識と秩序構想

抄録

In the midst of the Pacific War, SHINOBU Junpei, international lawyer and diplomatic historian, provided a bold speech at the general assembly of the Japan Association of International Law. Reflecting his experiences in studying and teaching international law of war for more than thirty years, Shinobu cautioned the audience about the rapid decline of obedience to international law after the Sino-Japanese War amongst Japanese. Although making the least reservation for fear of censorship during the wartime, Shinobu undeniably had presented his keen anxiety about the decreasing effectiveness of international law of war as restrainer to the total war. Did practices and norms of the classical diplomacy including international law of war remain relevant to international order during the interwar years? If they still had relevance, how could they be applied to Japanese diplomacy in the different situation from the pre-W. W. I era? This article intends to shed lights on the ambivalent attitude of Japanese intellectuals toward international order during the interwar years who had still believed in the classical diplomacy even after W. W. I with special reference to the case of Shinobu Junpei.
In the historiography of Japanese studies of international politics, Shinobu is known for his pioneering works, “International Politics” published in the mid-1920's. Investigating those works, the first chapter analyzes how Shinobu perceived the trend of the “New Diplomacy.” While skeptical about the Wilsonian idealism, Shinobu regarded the “democratization of diplomacy” as the trend of “national diplomacy” which had increasingly gained currency in Japan after the Russo-Japanese War. In this sense, like H. Nicolson's classical work on diplomacy, Shinobu's works tried to tame the “New Diplomacy.”
Given those perceptions, Shinobu had published a series of essays arguing how Japanese foreign policies were and should be. The second chapter therefore tries to delineate Shinobu's diagnosis of Japanese foreign policies around the Manchurian Incident and evaluate the significance and limits of his legalist approach toward the Manchurian problems with comparison to the cases of ROYAMA Masamichi and KAMIKAWA Hikomatsu, younger political scientists emerging after W. W. I.
The third chapter surveys the trend of Japanese studies on international law of war after the Manchurian Incident. Shinobu's persistence in international law of war will be discussed here with comparison to the case of TAOKA Ryoichi who had shared the realist sentiments to international politics in the 1930's. Finally, on the basis of the post-W. W. II recollections, this article depicts how Shinobu viewed the Pacific War manly focusing on his understanding of the relationship between the Renunciation of War Treaty and the Pacific War.