Japan-US alliance, Security in Asia, Politics and diplomacy of Japan and the United States
Middle East and Islamic studies, peacebuilding, international cooperation
Security and international relations in Southeast Asia
Pacific Islands (Politics, Economy and Development Assistance)
Military History and Strategy, International Security Policy and Strategy, Japan-U.S. Alliance.
Indo-Pacific security; Australian foreign policy; Japanese foreign policy; Australia-Japan relations
Foreign & Security Policy of the Republic of Korea, International Relations in East Asia
International law, law of the sea, maritime security
European Security, New domains (space, cyberspace and the electromagnetic spectrum), Defense Technology Innovation
Foreign aid and security cooperation
Expertise: Russia’s foreign and security policy and Eurasian geopolitics
International Relations in South Asia
Ideology of International Relations, Theory of the International Order, Japanese Diplomatic History
Maritime Security, Chinese Military Strategy
Theory of international relations, security theory, U.S. diplomacy