In the book of Shumpei Okamoto, professor of history, a major specialist in the field of political science in East Asia, based on numerous sources, the role of Japanese oligarchs in the country's foreign policy in the triumphant period for the Japanese people after the victory over the Russian Empire is investigated. The author analyzes the consequences of Western influence on the ruling elite, the mechanisms of mass riots, and also reveals the weaknesses and strengths of oligarchic rule.