The Korean airliner eventually crashed Catastrophe in the sea near Moneron Island west of Sakhalin in the Sea of Japan .

These factors , together with the evacuation Escaping of the Czechoslovak Legion , compelled Influence the Allied Powers to withdraw Escaping from North Russia and Siberia in 1920 , though Japanese forces occupied Control parts of Siberia until 1922 and the northern half of Sakhalin until 1925 .