East Asia is an increasingly dangerous place, with tensions high on the Korean Peninsula, a more assertive China, territorial disputes, and questions about the future role of the United States. These developments present critical challenges for Japanese foreign and security policymakers. Under Prime Minister Shinzo Abe, Japan has taken steps to reform its national security policy and infrastructure, and since the election of President Trump last November it has 'doubled down' on the US-Japan alliance. How will Japanese foreign policy evolve in light of these security challenges and through this period of dramatic strategic change?