Summary As the strategic goals of the status quo state(the United States), the revisionist state (China), a­nd the declining state (Russia) are different, it is not easy to establish an arms control system among the three. In addition, the development of hypersonic glide vehicles a­nd other developments have blurred the boundaries between nuclear a­nd non-nuclear assets. As the institutional design of the Cold War era finally comes to a true end, how should Japan get involved in the search for a new system?