Abstract

Post-war territorial issues on the formation of the Soviet Union, and the United States 'Cold War' policy is closely related. The United States because of "cold war" policy changes on the "Yalta Agreement" attitude, so that the territory of the Soviet Union about the legal basis for the lack of convincing, but also to provide a pretext for Japan to recover the territory; US-led "make peace treaty with Japan in San Francisco," asked the Japanese give up the territory, but do not define their ultimate ownership of the object; the United States restored diplomatic relations between the normalization of Japan-Soviet negotiations interference, appears to support the Japanese claim, in essence, a compromise to prevent Japan leaving a legacy of the territorial issue. American International "Cold War" is caused by post-war policy on the Soviet Union and the formation of the Russo-Japanese territorial issue, the most important external factors. The formation of the Japan Soviet Union Territory dispute after World War Ⅱ was bounded up with the US Cold War policy, which had changed the US's attitude towards the Yalta Agreement and contributed to the demand of taking back the territory of Japan while weakened the Soviet Union's legislative authority of the territory. The US-dominated San Francisco Treaty of Peace requested Japan's abnegation of the territory, and had left an adscription issue behind. The US superficially supported Japan, but facilitated the formation of the adscription issue essentially. Consequently, the US Cold War policy was one of the most important external factors that engendered the Japan-Soviet Union / Japan-Russia territory dispute