In 1922, Yasue and Inuzuka had returned from the Japanese Siberian Intervention, aiding the White Russians against the Red Army where they first learned of the "Protocols" and came to be fascinated by the alleged powers of the Jewish people. Over the course of the 1920s, they wrote many reports on the Jews, and traveled to the British Mandate of Palestine (now Israel) to research the subject and speak with Jewish leaders such as Chaim Weizmann and David Ben-Gurion. Yasue translated the "Protocols" into Japanese. The pair managed to get the Foreign Ministry of Japan interested in the project. Every Japanese embassy and consulate was requested to keep the ministry informed of the actions and movements of Jewish communities in their countries. Many reports were received but none proved the existence of a global conspiracy.