"While launching counter-offensives against Nazi Germany and Imperial Japan in the last war years, the Allied powers repeatedly issued joint declarations regarding their intention to bring to justice the Axis war criminals. One might expect, under those circumstances, that the members of Unit 731 would have been among the first for the Allied authorities to name as war criminals and to put on trial. But that, in fact, was not the case. Unit 731 rather became a pawn of cold-war politics as the U.S. government prioritized racing against the Soviet Union in securing the biological weapons’ knowledge that Unit 731 had amassed and, to that end, shielding from war crimes prosecution the medical unit’s former members, including its chief, Surgeon General Ishii Shiro. The Soviet authorities, for their part, had their own share of interests in gaining access to Unit 731’s secretive information, but they appeared also focused on using it as a propaganda tool to be deployed against the United States. Having failed in getting the inter-Allied prosecuting agency at the International Military Tribunal for the Far East (IMTFE, 1946-48) to incorporate the evidence of Unit 731 in the case against major Japanese war criminals, the Soviet government set up a special military tribunal at Khabarovsk in December 1949 to hold a joint trial of 12 former Japanese army officers on criminal charges relating to Unit 731’s wartime activities. It went on to publish the official record of the trial in multiple languages (including in Japanese), and put pressure on the United States and other Allied countries to proceed with a trial of the Japanese emperor, Hirohito (1901-89; r. 1926-89), based on the Khabarovsk Trial’s findings. No formal inter-Allied deliberation concerning the possible trial of Hirohito ensued, however, since the U.S. government snubbed the Soviet initiative as a publicity stunt, and the Soviet government eventually let the matter drop. In this manner, the Allied Powers allowed certain known war criminals to escape prosecution despite their stated policy at the outset to mete out stern punishment to war criminals, thereby sending contradictory messages to the Japanese public about the Allied commitment to justice and accountability."