Yoko Iwama is a professor at the National Graduate Institute for Policy Studies (GRIPS) and the director of Security and Strategy Programme and Maritime Safety and Security Programme at GRIPS. Having served as a research assistant at Kyoto University (1994–97), special assistant of the Japanese Embassy in Germany (1998–2000), and associate professor at GRIPS (2000), she was appointed professor at GRIPS in 2009. Her specialty is international security and European diplomatic history focusing on NATO, Germany, and nuclear strategy. Her publications include John Baylis and Yoko Iwama (ed.) Joining the Non-Proliferation Treaty: Deterrence, Non-Proliferation and the American Alliance (Routledge, 2018) and her newest book, The 1968 Global Nuclear Order and West Germany that came out in August 2021 in Japanese. She is currently working on co-authored books on the origins and evolution of the nuclear sharing in NATO and on the neutrals, the non-aligned countries, and the NPT. She holds a PhD in law from Kyoto University.