“[They] testified that the Japanese government had been preparing a war against the Soviet Union for many years,” Colonel-General Viktor Abakumov, the head of #SMERSH, wrote in a memorandum to the Soviet government on February 13, 1946. “The Japanese General Staff developed its own plan of attack on the USSR, similar to ‘#Barbarossa’, with the code name ‘#Kantokuen.’”
https://www.rt.com/russia/539999-japanese-plan-invade-ussr/