- 2023 - 2027 US Foreign Policy and the End of the Cold War in East Asia
- 2021 - 2025 Various endings of the Cold War: resolution of global conflicts and transformation of local orders
- 2021 - 2024 1970年代の日米欧三極国際秩序の模索-日米関係史と日欧関係史の総合化の試み
- 2018 - 2023 「アメリカの覇権的秩序」に代わる戦後世界秩序像の探求:J・F・ダレスを焦点に
- 2022 - 2022 “Nuclear Alliances” in the Changing International Order: A Comparative Analysis of NATO and US-Japanese Alliance
- 2018 - 2022 米国による同盟の戦略的調整に関する比較歴史研究:脅威認識・安心供与・コスト負担
- 2017 - 2021 Globalization of the world and the transformation of the Cold War international order
- 2014 - 2017 Alliance politics, decolonization and cultural transformation - a new history of the Cold War through three perspectives
- 2013 - 2016 International Political History of Detente and Globalization during the 1960s and the 1970s
- 2013 - 2016 The U.S.-Japan Relations, 'the Nuclear' Issues, and Asia in the 1950s and the 70s
- 2011 - 2014 Boundaries of the Cold War - towards a new perspective
- 2010 - 2013 Detente, the Western Alliance, and the Johnson Administration,1963-68.
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Japanese Political Science Association
, Japanese Association of American History
, Japanese Association of American Studies
, Japanese Association of International Relations