Education / Career

• 2000

  B.A. in Liberal Arts, International Christian University

• 2002

  M.A. in International Public Policy, Osaka University
  Special Advisor, Permanent Mission of Japan to the International Organizations in Vienna

• 2004

  COE Research Assistant, International Christian University

• 2005

  Research Fellow, Center for the Promotion of Disarmament and Non-Proliferation, Japan Institute of International Affairs(JIIA)

• 2007

  Ph.D. in International Public Policy, Osaka University
  Adjunct Lecturer, Ryotokuji University

• 2010

  Research Fellow, the National Institute for Defense Studies(NIDS)
  Adjunct Lecturer, Otsuma Women's University

• 2012

  Senior Fellow, Policy Studies Department, Defense Policy Division, NIDS
  Assistant Director of International Exchange Programme

• 2021

  Visiting Scholar, University of Cambridge, Department of Politics and International Studies (POLIS)

Selected Publications

English

• "Reassessing the "Nuclear Winter" Theory: Current Research on the Climate Effects of Nuclear War and Its Implications for Security and Nuclear Deterrence, "

  Security & Strategy, vol.3, January 2023, pp.2-18.

• "Prospects for the UK's nuclear arms control and non-proliferation policy after the publication of the integrated review of 'Global Britain in a competitive age' "

  NIDS Commentary, no.167, March 31, 2022.

• "Nuclear Weapon States, Nuclear Umbrella States, and the Treaty on the Prohibition of Nuclear Weapons (TPNW)"

  NIDS Journal of Defense and Security, No.20, December 2019.

• "High altitude Electromagnetic Pulse (HEMP): Background leading to the signing of the Executive Order by the President of the United States in 2019, and future outlook"

  NIDS Commentary, No. 101, December 24, 2019.

• "Nuclear Nonproliferation and Economic Sanctions: Can Non-Military Sanctions Stop Nuclear Proliferation?"

  NIDS Journal of Defense and Security, No.18, December 2017, pp.59-79.

• "Threat of Cascading "Permanent Blackout" Effects and High Altitude Electromagnetic Pulse(HEMP)"

  NIDS Security Studies, Vol.18, No.2, February 2016, pp.1-21.

• "Chapter 8 CBRN Defense: Responding to Growing Threats"

  The National Institute for Defense Studies, ed., East Asian Strategic Review 2015, The Japan Times, 2015, pp.293-315.(*Co-authored)

• "The Concept of Virtual Nuclear Arsenals and a World without Nuclear Weapons"

  NIDS Journal of Defense and Security, No.13, December 2012, pp. 23-37.

• "Assessing the 2010 NPT Review Conference and a Vision towards "a World Free of Nuclear Weapons"."

  NIDS Briefing Memo, 2010, pp.27-31.

• "Japan's Nuclear Disarmament and Non-Proliferation Policy: Multilateral Approaches, Regional Efforts and Region-to-Region Cooperation."

  Takako Ueta and Eric Remacle eds. Tokyo-Brussels Partnership: Security, Development and Knowledge-based Society, Bruxelles: Peter Lang Publishing Group, 2008, pp.203-218.

• "Early Entry into Force of CTBT for Future NPT Regime: Challenge for Renovation of Verification in the Post DPRK Nuclear Test 2006."

  CPDNP Op-Ed Working Paper, 2007, pp.1-7.

• "Comprehensive Nuclear-Test-Ban Treaty (CTBT) On-Site Inspection Regime."

  Doctoral Thesis, Osaka University, 2007.

• "CTBT On-Site Inspection: Protection of Confidentiality and Information Relevancy."

  CPDNP Working Paper, 2006, pp.1-13.

Japanese

• "Verification of International Agreements: From Arms Control to Climate Change,"

  Security & Strategy, vol.3, no.2, March 2023, pp.43-62. (English abstract attached)

• "Reassessing the 'Nuclear Winter' Theory: Current Research on the Climate Effects of Nuclear War and Its Implications for Security and Nuclear Deterrence"

  Security & Strategy, vol.2, no.2, March 2022, pp.81-97. (English abstract attached)

• "Rethinking Theories of the Security in the Second Nuclear Age"

  International Relations, vol.203, March 2021, pp.17-32. (English abstract attached)

• "Dismantling and Disposal of Nuclear Warheads and 'Verification Approach by a Coalition of Willing': A Study on the Development of the Verification System for the Treaty on the Prohibition of Nuclear Weapons (TPNW)"

  Security & Strategy, vol1, no.2, October 2020, pp.35-56. (English abstract attached)

• Kensyoukanou na Chousenhantou Hikakuka ha Jitsugendekiru ka [Possibility of Verifiable Denuclearization of Korean Peninsula]

  Tokyo: Shinzansya, 2020.

• Kakujikken Kinshi no Kenkyu: Kakujikken no Senryakuteki Gani to Kokusaikihan [A Study on the Comprehensive Nuclear-Test-Ban: International Norm and its Strategic Implications]

  Tokyo: Shinzansya, 2018. (2019 Saeki Kiichi Prize Awarded by the Japan Association for International Security)

• "Tactical Nuclear Weapons: Next Challenges of Nuclear Arms Control and Disarmament"

  The Journal of International Security, Vol.40, No.4, March 2013, pp.71-85.

• "Negotiating Arms Control, Disarmament and Non-Proliferation and the UN System: An Essay on Structural Collision between Haves and Have-nots of the Nuclear Weapons."

  Kokuren Kenkyu [United Nations Studies], No.10, 2009, pp.155-174. (English abstract attached)

• "Norm Building by the UN Security Council: UNSCR 1540 and Governance of WMD Non-Proliferation."

  International Relations, No.155, 2009, pp.61-75. (English abstract attached)

• Kakujikken no kinsi to kensyo [Prohibition and Verification of Nuclear Test Explosion]."

  Masahiko Asada and Hirofumi Tosaki eds. Kakugunsyuku Fukakusan no Hou to Seiji [Law and Politics of Nuclear Disarmament and Non-Proliferation], Tokyo: Shinzansya, 2008, pp.223-245.

• "Comprehensive Nuclear-Test-Ban Treaty (CTBT) On-Site Inspection Regime."

  Doctoral Thesis, Osaka University, 2007, pp.1-146.

• "Coordinated Multilateral Action against the Threat of WMD Proliferation: A Universal Non-Proliferation Regime and European Union."

  International Christian University Journal of Social Science, No.54, 2005, pp. 73-98. (English abstract attached)

• "SHIRBRIG: The Touchstone of UN Stand-by Force."

  Gaimusyo Tyousa Geppou, No.3, 2002, pp.79-117. (English abstract attached)

Conference Papers, etc

• "Pursuit of nuclear disarmament and non-proliferation through non-military means: Case of Korean Peninsula"

  Paper presented at the JAIR Annual convention sectional meeting C-7 Peace Studies (Kobe, October 28, 2017, Japanese.)

• "Reevaluating Threats of High-Altitude Electromagnetic Pulse (HEMP): A New Challenge to the Recent Arguments on Humanitarian Impact of Nuclear Weapons"

  Paper presented at the JAIR Annual Convention Sectional Meeting B-5 International Security I (Sendai, October 30, 2015, Japanese.)

• "A Framework for Verifying the Dismantlement and Abandonment of Nuclear Weapons: A Policy Implication for the Denuclearization of Korean Peninsula."

  Paper presented at the 32th Annual Meeting of INMM Japan (Tokyo, 11 November 2011, Japanese.)

• "Prevention of Nuclear Proliferation and New Nuclear Danger."

  Paper presented at the International Nuclear Security Seminar organized by the Korea National Defense University (Seoul, 22 June 2011.)

• "A New Perspective on Building the International Norm for the Nuclear Free World."

  Paper presented at the Peace Studies Association, Autumn Conference (Kyoto, 29 November 2009, Japanese.)

• "Nuclear Sharing under the Nuclear Nonproliferation Regime: NATO's Experience and Its Implications."

  Paper presented at the Japan Association of International Relations Annual Convention on (Kobe, 6 November 2009, Japanese.)

• "Strengthening of Capacity Building for the Future On-Site Inspection Readiness: How to Apply Lessons Identified through the Post-Integrated Field Exercise (IFE) Review Processes?"

  Paper presented at the 16th CTBTO On-Site Inspection Workshop (Wien, 6 May 2009, English.)

• "Significance of NTM Verification in the Executive Organ Established for the Disarmament and Non-Proliferation Treaties."

  Paper presented at the 28th Annual Meeting of INMM Japan (Tokyo, 8 November 2007, Japanese. *Co-authored.)

• "Japan and the International Efforts on Non-Proliferation."

  Paper presented at the international conference on "EU and Japan: the Emerging Challenges for the Middle of the Decade 2000-2010." (Brussels, 28 November 2006, English.)

• "How to Protect the OSI Confidential Information."

  Paper presented at the 11th CTBTO On-Site Inspection Workshop, (Canberra, 14 October 2005, English.)

Annual Reports (English)

• "2020 Edition Hiroshima Report - Evaluation of Achievement in Nuclear Disarmament, Non-Proliferation and Nuclear Security in 2019"

  Published by Hiroshima Prefecture / Center for Disarmament, Science and Technology, Japan Institute of International Affairs, March 2020. (Author of Chapter3 Nuclear Security)

• "2019 Edition Hiroshima Report - Evaluation of Achievement in Nuclear Disarmament, Non-Proliferation and Nuclear Security in 2018"

  Published by Hiroshima Prefecture / Center for the Promotion of Disarmament and Non-Proliferation, Japan Institute of International Affairs, March 2019. (Author of Chapter3 Nuclear Security)

• "2018 Edition Hiroshima Report - Evaluation of Achievement in Nuclear Disarmament, Non-Proliferation and Nuclear Security in 2017"

  Published by Hiroshima Prefecture / Center for the Promotion of Disarmament and Non-Proliferation, Japan Institute of International Affairs, March 2018. (Author of Chapter3 Nuclear Security)

• "2017 Edition Hiroshima Report - Evaluation of Achievement in Nuclear Disarmament, Non-Proliferation and Nuclear Security in 2016"

  Published by Hiroshima Prefecture / Center for the Promotion of Disarmament and Non-Proliferation, Japan Institute of International Affairs, March 2017. (Author of Chapter3 Nuclear Security)

• "2016 Edition Hiroshima Report - Evaluation of Achievement in Nuclear Disarmament, Non-Proliferation and Nuclear Security in 2015"

  Published by Hiroshima Prefecture / Center for the Promotion of Disarmament and Non-Proliferation, Japan Institute of International Affairs, March 2016. (Author of Chapter3 Nuclear Security)

• "2015 Edition Hiroshima Report - Evaluation of Achievement in Nuclear Disarmament, Non-Proliferation and Nuclear Security in 2014"

  Published by Hiroshima Prefecture / Center for the Promotion of Disarmament and Non-Proliferation, Japan Institute of International Affairs, March 2015. (Author of Chapter3 Nuclear Security)