The book shows the main directions of the anti-Soviet military policy of Japan on the eve and during the Second World War. Disclosure of strategic and operational plans, a set of measures to prepare for war in 1931-1945. makes it possible to better understand the adventurous nature of the plans of aggression, the true reasons for the failure of the so-called "ripe persimmon" strategy, which provided for a treacherous attack on the USSR from the East in the event of its defeat in the war against Nazi Germany, as well as refute the reactionary concepts of the history of Soviet-Japanese relations.