JAPAN AND THE UNITED STATES RELATIONSHIP IN THE SECURITY FIELD A. A Brief History of Relations between Japan and the United States The outbreak of World War II which occurred in 1939 was an international conflict involving two opposing camps between the Axis Block and Allied Block. This conflict is part of an extension of the remaining conflicts of World War I which have not been completely resolved. In the midst of the heat of the conflict of World War II, Japan expanded its territory in the Asia Pacific region to attract the attention of the allies. This will be the initial trigger for major changes in international political conditions. (Ashari, 2015, p. 475) 1. Japan's defeat in World War II Freed from the politics of isolation in 1868, Japan attempted to expand its influence globally by launching Japanese imperialism against Asian countries. Japan is very aggressive in showing its military power. Japan launched an invasion by placing its military power to control an area and was involved in various wars. Japan has shown itself as a country that has strong military power and deserves to be reckoned with on the global stage. (Riyanto, 2012) One of Japan's aggressive actions