This paper which is titled ‘the 1954 Japanese Diet's 'Institution of an ICJ Lawsuit regarding Dokdo' Promotion Remark and Background Examination' is analyzed' focused on the Japanese Diet collections of Dokdo related documents'. This paper is consisted of four chapters, and in chapter one, there are former study results and an examination of why Japan is emphasizing on domestic publicity education regarding Dokdo's sovereignty, which is a pending issue between Korea and Japan. In chapter two, there is an examination of the grounds for the Diet's claim over Dokdo. As the San Francisco fortification treaty contract drew close, the Diet carefully mentioned the Dokdo sovereignty remark. Later, as the Korean government effectuated the peace line proclamation and as Japanese fishing within the peace line became prohibited,the Diet started to claim sovereignty over Dokdo. Eventually, the Diet is considering institution of an ICJ lawsuit. In chapter three, there is a case in which one crew member died during Korea's seize of Daihomaru, that was carrying out fishing work over the peace line in Feb.1953. As a response to this matter, the Diet considers Dokdo as a national border conflict, reconsiders the ICJ lawsuit, and as a response to questions of the Diet members, the foreign minister Okazaki mentions that he also considers instituting an ICJ lawsuit. However, the Diet eventually gives up instituting the ICJ lawsuit of Dokdo. The reasons are first, because of the insufficient proof of Japan's sovereignty over Dokdo, and second, because of Korea's lighthouse establishment in Dokdo and registration of the fact on the U.S. sea route map.
In conclusion, chapter four, there is an additional content regarding the Japanese Diet's acknowledgment that instituting an ICJ lawsuit of Dokdo is difficult, and an analysis of the limits of instituting an ICJ lawsuit of Dokdo.