シベリア出兵
Following the defeat of the Russian Empire in the Russo-Japanese War of 1904–1905, co-operative relations between Russia and Japan were gradually restored by four sets of treaties signed between 1907 and 1916. However, the collapse of the Romanov dynasty, followed by the Bolshevik Revolution and the Japanese Siberian Intervention created a strong distrust between Japan and the newly founded Soviet Union.