Japanese Economic Capabilities. Note by Secretary Covering U.S. J.I.C. 8/5

4. Japanese economy is vulnerable because the processing of raw materials is concentrated to a high degree in a few industrialized areas (Tokyo, Osaka-Kobe, Moji-Shimonoseki, Nagoya). In addition to Japan proper there is a high and increasing degree of concentration of industry in Manchuria, especially in Mukden, Dairen and Fushun. This means that if and when the United Nations are in possession of air bases from which effective bombing attacks can be made on these areas, the whole of Japan's economic position becomes seriously imperilled, irrespective of whether or not Japan still has control over raw material producing regions.