Cold War. The files also acknowledged Tsuji's writings in his book Senkō Sanzenri to be mostly factual. The documents described Tsuji to be an "inseparable pair" with Takushiro Hattori and stated them to be "extremely irresponsible" and that they "will not take the consequences for their actions." Additionally, Tsuji was stated to be "the type of man who given the chance, would start World War III without any misgivings." As an asset to the CIA, he was described as having no value because of lack of expertise in politics and information manipulation. Additionally, the files contain information that Hattori had allegedly planned a coup to overthrow the Japanese government in 1952 that involved the assassination of Prime Minister Shigeru Yoshida and replacing him with Ichiro Hatoyama of the DPJ, but Tsuji prevented the coup by persuading the group that the real enemies were not conservatives like Yoshida but the Socialist Party. However, the files also state that the CIA learned about the attempt only after the fact and that the information was gained from an unreliable source from China. Some academics such as Tetsuo Arima of Waseda University have suggested that the entire story might have been a bluff leaked to the Chinese by Tsuji himself as a way to make him seem more influential than he actually was. According to the CIA files, when Tsuji returned to Vientiane from Hanoi, he was kidnapped by the Chinese Communist Party and was being imprisoned in Yunnan, ostensibly to be used in some way to worsen Japanese-American relations or Japan's standing in Southeast Asia. Tsuji was considered to be still alive as of 8 August 1962 on the basis of handwriting analysis conducted on the writing on an envelope that was brought on 24 August 1962. However, he was never heard from again. See also List of people who disappeared Honors Order of the Sacred Treasure, 3rd Class Order of the Golden Kite, 4th Class and 5th Class Order of the Rising Sun, Gold Rays with Rosette Decoration of Manchuria, 4th Class and 5th Class Commemoration Medal of the Coronation of Emperor Showa Commemoration Medal of the Census Commemoration Medal of the Founding of Manchuria Commemoration Medal of the 2,600th Year after the Accession of Emperor Jimmu Campaign Medal of the Chinese Incident Campaign Medal of the Manchurian Incident Further reading Peterson, James W., Barry C. Weaver and Michael A. Quigley. (2001).