In light of what some call a new Cold War between the U.S. and China, this project will review the significance of the Japan–U.S. alliance as a “public good” for Asia and the international community. Specifically, this project seeks to redefine and examine Japan’s new role in its national security with the ultimate goal of formulating national security policy recommendations. It also conducts joint research with other U.S. allies to transform the network of allies from a hub-and-spoke system to an interlocking network. This research will take a data-driven approach to analyze actions and potential challenges based on data collected by Japan. Furthermore, Table Top Exercises (TTX) will be conducted to verify the results of this research and identify new issues.