Viewing Russia as the primary threat to Japan, he wrote and published a large volume of anti-Russian propaganda, visited Vladivostok to gather intelligence on Russian activities in Asia, and vigorously advocated Japanese expansion into the Amur River Basin as a buffer against Russian aggression.
Japan viewed Russia as a significant danger, leading him to produce extensive anti-Russian literature, visit Vladivostok to gather information about Russian activities in Asia, and advocate for Japanese territorial growth in the Amur River area to prevent Russian encroachment.