日本国とアメリカ合衆国との間の相互協力及び安全保障条約
Following the Japanese surrender at the end of World War II, the island of Okinawa was administered directly by the U.S. occupation forces from 1950 until May 1972 when the island was turned over to the Japanese government. The severance of official diplomatic relations between Japan and the Republic of China in September 1972 forced the association to effectively become the de facto embassy of the Republic of China in Okinawa. Fang's position at the Association demonstrated the importance the Republic of China placed on Okinawa / Ryukyu which hosted the largest U.S. military presence in the region. The military buildup on the island during the Cold War saw a dramatic increase in the strategic importance of the islands. Under the 1952 Treaty of Mutual Cooperation and Security between the United States and Japan, the USFJ have maintained this large military presence.