Japan's information policy did not change suddenly during the Manchurian Crisis in September 1931-March 1933. Rather there was continuing development of state policy and institutions for news propaganda in response to two ongoing phenomena: growing mass political participation as indicated by universal manhood suffrage, and technological changes in mass media and communication.
The Japanese metropolitan government did, however, begin a coordinated and systematic approach to news propaganda during the Manchurian Crisis, one primarily driven by foreign policy concerns, rather than concerns with domestic thought control. At the same time, in the period that is often regarded as the beginning of Japan's diplomatic isolationism, MOFA and other foreign policy elites actively sought to engage international public opinion through management of the news for overseas propaganda. They further emphasized coordination between metropolitan centre, Tokyo, and a parallel news institution in Japanese-occupied Manchuria in 1931-3. The process of unifying news coverage, however, met strong oppositions from various stake holders in 1931-5.