Jin Saito is a geopolitical strategist and investment adviser specializing in geopolitical risk and its impact on global financial markets. He has advised international institutional investors and financial firms for many years, providing analysis that connects political developments with investment strategy. His best-known book, "When the World Order Changes: From Neoliberalism to the Age of Geopolitics," examines how developments such as U.S.–China rivalry and the Russia–Ukraine war are reshaping the global economy and the investment landscape through the lens of geopolitics.