一宇垣上台的背景徐州陷落以后,接着是近卫内阁的改组,而日本的外交机构,也起了一个重大的变动。五六年来可算最活跃,一帆风顺,得军部相当支持的外相广田弘毅,居然跟着徐州的陷落而黯然下台了。代他而坐外相交椅的,却是一位素与霞关毫无渊源的「政界惑」,年逾古稀的陆军大将宇垣一成。这是近二三十年来日本外交界空前未有的现象。广田的下台,是否表示广田所标榜的「世邦协和外交」「东亚自主外交」「对华三原则外交」的没落呢?宇垣的上台,是否表示他将在外交路线上别树一帜,而展开他的「惑星」的本能呢?如果说,广田外交 The Background of Utsugi’s Administration After the fall of Xuzhou, there followed the reorganization of the cabinet of the Guards, and Japan’s diplomatic establishment also took a major change. In the last five or six years, Hirohiro Hirota, the most active and smooth sailing foreign minister with considerable military support, actually stepped down with the fall of Xuzhou. On the other hand, he took a seat outside the court and turned out to be a “politically puzzled” politician who had no connection with Kasumigaseki. This is an unprecedented phenomenon in Japan’s diplomatic community in the recent two or three decades. Does the expulsion of Hirota mean that Hirota’s “World State Diplomacy on Diplomacy” and “East Asian diplomacy” and the “three principles of diplomacy toward China” have declined? Does his appointment mean that he will make a difference on diplomatic lines? And start his instinct of “puzzling star”? If that is Hirota diplomacy