[Machine Translation] Russia's actions in invading Ukraine seem "bizarre" to us Japanese. But how does Russia view postwar Japan, which has enjoyed peace under the "U.S. nuclear umbrella"? What is the logic and realism of national defense to create regional stability in the rapidly changing East Asian situation? A former diplomat to Russia reveals Japan's current position and challenges from the history of Japan-Russia relations, and asks what the medium- to long-term security policy should be based on political wisdom.