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Kati Juva is a retired neurologist and adjunct professor in Helsinki University. In her professional career she has focused on memory disorders and neuropsychiatry.
She has served in the leadership of IPPNW since 2010 as Deputy Speaker, Speaker and member of the Board and has been one of the Co-presidents of IPPNW since 2023. She is a founding member on Physicians for Social Responsibility, Finland (1982) and has many years served as chair of PSR Finland. Kati Juva is active writing blogs and articles both in English e.g. in the Peace and health -blog, and in Finnish. She has published a book Nuclear weapons endanger your health (in Finnish).
Kati Juva has also been one of the two coordinators of ICAN Finland network since 2014. She meets regularly with Finnish politicians and civil servants in the ministry of foreign affairs and WHO and goes around speaking of the need to abolish nuclear weapons and advocating Finland to sign the TPNW.
Juva has also served as a city councillor and member of the health, social welfare and rescue service committee in the city in Helsinki.

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Terumi TANAKA was born on April 29, 1932.
At age 13, he experienced the Nagasaki A-bomb inside his house located at 3.2 kilometers from the blast center. He lost five of his family members all at once. He cremated the body of his aunt in the field, who survived only a few days after the bombing with heavy burns.
He graduated from the Science University of Tokyo in 1960. He is a physicist in magnetochemistry and former Assistant Professor of Tohoku University.
Since 1974, he has contributed to the Hibakusha movement for the abolition of nuclear weapons and for state compensation for the damage caused by the bombings. Since he participated in the first SSOD held in the UN in 1978, Tanaka has joined meetings in the UN including the NPT review conference and visited various countries to tell the truth what the atomic bombing caused.
After working as Secretary General of the Japan Confederation of A-and H-Bomb Sufferers Organizations (Nihon Hidankyo) for 20 years, he became Co-chairperson of Hidankyo in 2017.
Nihon Hidankyo was awarded the 2024 Nobel Peace Prize, and he delivered Nobel lecture in the Award Ceremony of the Prize in Oslo on December 10.

Tatsujiro SUZUKI is President of a non-profit organization “Peace Depot” and a Visiting Professor of Research Center for Nuclear Weapons Abolition at Nagasaki University (RECNA), Japan. Before joining RECNA, he was a Vice Chairman of Japan Atomic Energy Commission (JAEC) of the Cabinet office from January 2010 to March 2014. Until then, he was an Associate Vice President of the Central Research Institute of Electric Power Industry in Japan (1996-2009) and an Associate Director of MIT’s International Program on Enhanced Nuclear Power Safety from 1988-1993 and a Research Associate at MIT’s Center for International Studies (1993-95). He is now a member of Advisory Board of Parliament’s Special Committee on Nuclear Energy since June 2017. He is a Council Member of Pugwash Conferences on Science and World Affairs (2007-09 and from 2014~), and is Chair of its Executive Committee since Jan. 2025, co-chair of International Panel on Fissile Materials (IPFM) and an International Advisory Board member of Asia Pacific Leadership Network for Nuclear Non-Proliferation and Disarmament (APLN). He is also a non-resident Senior Fellow at UN Institute for Disarmament Research (UNIDIR) since 2024. Dr. Suzuki has a PhD in nuclear engineering from Tokyo University (1988).
https://researchmap.jp/read_19458689?lang=en

Dr. Umaña is a general practitioner, former local health director, and epidemiological surveillance officer with the Costa Rican Ministry of Health. Serving as IPPNW Co-President, he is also on the ICAN International Steering Group. He is the current president of IPPNW Costa Rica, founder of Artists for Peace (2014) in Costa Rica, and president of the activist group “Peace and Diversity”. He is also the recipient of the 2018 “Alan Turing LGBTIQ Visibility Award” for Social Organization.
Since 2013, he has worked by campaigning and lobbying for awareness on the humanitarian impact of nuclear weapons (HINW) and support for the Treaty on the Prohibition of Nuclear Weapons (TPNW). He has worked closely with governments as part of the Costa Rican delegation in the 2014 NPT PrepCom and the 2015 NPT Review Conference, and has worked with the network of regional peace organizations to organize conferences and roundtables on the HINW and the TPNW.

The Hon. Melissa Parke was appointed as the Executive Director of the International Campaign to Abolish Nuclear Weapons (ICAN) on 1 September 2023.
Ms Parke is a former Australian Minister for International Development, and former Australian federal Member of Parliament (2007 to 2016).
Prior to being elected to the Australian Parliament, Ms Parke worked as an international lawyer with the United Nations in Kosovo, Gaza, New York and Lebanon (1999 to 2007).
More recently, Ms Parke served as a member of the UN Group of Eminent Experts on Yemen, mandated by the UN Human Rights Council to investigate violations of international human rights and humanitarian law during the conflict in Yemen (2017-2021).
Ms Parke also served as an Ambassador for ICAN Australia (2017-2023).

Walusungu Mtonga is a dedicated individual who has been serving as one of two International Student Representatives for IPPNW for the past 2 and a half years.
- Education: He holds a premedical degree in Human Biology and recently graduated with a Bachelor of Medicine and Bachelor of Surgery degree from the University of Zambia.
- IPPNW Involvement: Walusungu has represented IPPNW at various international meetings, including the World Medical Association General Assembly and UN meetings. He has been actively involved in the organization's student movement, working closely with medical students and young doctors worldwide.
-Leadership Roles: Currently, he serves on the Executive Committee of the Zambia Health Workers for Social Responsibility, the Zambia IPPNW affiliate, where he is leading the campaign to ensure Zambia's ratification of the Treaty on the Prohibition of Nuclear Weapons (TPNW).
He also serves as Partnerships Coordinator for Youth for TPNW, a global youth led movement pursuing the complete implementation of the TPNW.
Walusungu has worked tirelessly to represent the voices of IPPNW students on the international governing board and connect with students worldwide.

Yasushi Miyazaki is a physician specializing in hematology and is an expert in hematopoietic malignancies, such as leukemia and myelodysplastic syndromes. He serves on the board of directors of the Japanese Society of Hematology, and the Japan Adult Leukemia Study Group (JALSG) which is the largest study group for adult leukemia promoting multi-institutional clinical trials in Japan. He is a chief of the Department of Hematology, Nagasaki University Hospital, and is also conducting research on hematopoietic tumors, particularly myelodysplastic syndromes, seen in atomic bomb survivors.

Born in Nagasaki City in 1943. Encountered and survived the Second Atomic Bomb on August 9, 1945 at 2.5 km from Ground Zero. After graduation from Nagasaki University School of Medicine in 1968 he became an internist and in 1985 professor of hematology, specializing medical care for survivors. He continued research on the radiation induced malignant disorders, mainly leukemia. After retirement from medical school he was appointed Director of Japanese Red Cross Nagasaki Atomic Bomb Hospital until 2012, then became Director of Atomic Bomb Survivors Nursing Home until now. He was also appointed in 2019 the President of Nagasaki Prefectural Hibakusha Association. He is now Vice–President of IPPNW in Japan.

Hiroo Dohy was born in Hiroshima in 1945. He graduated from Hiroshima University School of medicine. He studied internal medicine and hematology in Hiroshima University Hospital for 19 years. He moved to Hiroshima Red Cross Hospital as a director of hematology department in 1984. He became a board of director of Hiroshima prefectural medical association and also board of director JPPNW Hiroshima during 1993-1999. He promoted to President of Hiroshima Red Cross Hospital ＆ Atomic-Bomb Survivors Hospital in 2004. In 2012 he became a director of Chugoku-shikoku block Blood Center. Now he is a president emeritus of al Hiroshima Red Cross Hospital＆Atomic-Bomb Survivors Hospital and working also as General Counsel of Blood Service Headquarters of Japanese Red Cross.

Professor in the Department of Sociology at Meisei University in Tokyo
Affiliated Researcher at the Institute for Peace Science at Hiroshima University
Born in 1977, Takemine received his Ph.D. from the Graduate School of Asia-Pacific Studies at Waseda University. His majors are international sociology, peace studies, and regional studies of the Pacific Islands. He is the author of Marshall Islands: Living Through Endless Nuclear Damage (『マーシャル諸島終わりなき核被害を生きる』) , published by Shinsensha in 2015; "Resisting US Nuclear Tests: The UN Petition from the Marshall Islands” in Resisting the Nuclear: Art and Activism Across the Pacific, published by the University of Washington Press in 2024 (pp. 147–165), among others. Since 1998, Takamine has visited the Marshall Islands over 20 times, staying for several weeks each visit to conduct interviews with local residents. While expanding his fieldwork to Japan, Kazakhstan, Ukraine, and the United States, he organized a collaborative research project to uncover and compare compensation systems for nuclear victims around the world.

On August 9, 1945, when I was 10 years old, I was exposed to the atomic bomb in Nagasaki. I was inside a house about 3.6 km from the hypocenter. My family was safe, but a few days later I saw harrowing scenes at my elementary school.
In 2014, I sailed on a ship called the Peace Boat, and traveled around the world with other atomic bombing survivors in order to tell people what happened in Nagasaki. That was when I started talking about my experience in the atomic bombing. And even now, I continue to share my experiences with the many students who come to Nagasaki.

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Kati Juva is a retired neurologist and adjunct professor in Helsinki University. In her professional career she has focused on memory disorders and neuropsychiatry.
She has served in the leadership of IPPNW since 2010 as Deputy Speaker, Speaker and member of the Board and has been one of the Co-presidents of IPPNW since 2023. She is a founding member on Physicians for Social Responsibility, Finland (1982) and has many years served as chair of PSR Finland. Kati Juva is active writing blogs and articles both in English e.g. in the Peace and health -blog, and in Finnish. She has published a book Nuclear weapons endanger your health (in Finnish).
Kati Juva has also been one of the two coordinators of ICAN Finland network since 2014. She meets regularly with Finnish politicians and civil servants in the ministry of foreign affairs and WHO and goes around speaking of the need to abolish nuclear weapons and advocating Finland to sign the TPNW.
Juva has also served as a city councillor and member of the health, social welfare and rescue service committee in the city in Helsinki.

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Tom Sauer is Professor in International Politics at the Department of Politics at the Universiteit Antwerpen (Belgium).
Sauer is specialized in international security, and more in particular in nuclear arms control, proliferation, and disarmament. He has published eleven books (monographs and edited books), dozens of academic articles in journals, and more than 300 opinion articles. His latest co-edited book (with Yoichiro Sato and Elena Atanassova-Cornelis) is titled Security Order and Strategic Alignment in Europe and the Asia-Pacific (Routledge, 2025).
Tom Sauer has studied Politics and International Politics at the FUNDP-Namur (Belgium), the Katholieke Universiteit Leuven (Belgium), the University of Hull (UK), and the Bologna Center of the Paul H.Nitze School of Advanced International Studies (SAIS) of the Johns Hopkins University (US). He obtained a PhD in Social Sciences (Politics) from the Katholieke Universiteit Leuven (Belgium).
Sauer received a NATO Individual Scholarship (1994-1995), a Rotary Ambassadorial Scholarship (1997-1998), a Postdoctoral Fellowship of the Research Foundation – Flanders (2002-2008). He is a former BCSIA Fellow at the John F.Kennedy School of Government at Harvard University (US)(1997-1999), and an active member of the Pugwash Conferences on Science and World Affairs. In 2019, he received the Rotary Alumni Global Service Award.

Tong Zhao is a Senior Fellow at the Nuclear Policy Program and the China Center at the Carnegie Endowment for International Peace. Formerly based in Beijing, he now conducts research in Washington on strategic security issues, such as nuclear weapons policy, deterrence, arms control, nonproliferation, missile defense, hypersonic weapons, regional security issues in Asia Pacific, and China’s security and foreign policy.
He is also a nonresident researcher at the Science and Global Security Program of Princeton University, an associate editor of the journal Science & Global Security, and a member of the International Panel on Fissile Materials. He was a virtual visiting research fellow at the Cooperative Monitoring Center of the Sandia National Laboratories, a Stanton Nuclear Security Fellow at Harvard University, a nonresident WSD-Handa Fellow at Pacific Forum, and worked for the Office of Foreign Affairs of the People’s Government of Beijing Municipality.
He holds a PhD in science, technology, and international affairs from Georgia Institute of Technology, as well as an MA in international relations and a BS in physics from Tsinghua University. He has published in Arms Control Today, Asian Security, The Atlantic, Bulletin of the Atomic Scientists, Foreign Affairs, Foreign Policy, and New York Times, among others.

Anahita Parsa is a Policy Fellow on the Non-Proliferation and Disarmament Programme at BASIC, working on both the development of the NPT Monitor, and a framework for Nuclear Weapon Harm Reduction.
Previously, she co-coordinated the Emerging Voices Network at BASIC, and served as Clerk to the UK All Party Parliamentary Group on Global Security and Non-Proliferation. She was also Programme Manager at the Middle East Treaty Organization, working on the establishment of a Middle East Weapons of Mass Destruction Free Zone, amongst other work in collaboration with the United Nations’ UN75 initiative, and as Advocacy Manager at SCRAPWeapons.
Anahita focuses on nuclear diplomacy, disarmament, and the global nuclear order, with regional expertise on the Middle East. She is interested in the application of futures and foresight methods, and also exploring intersectional approaches (e.g. gender, decolonial thought) to practices of peace and diplomacy, and their implications for nuclear policymaking.
She has an MA in International Studies and Diplomacy, from the Centre for International Studies and Diplomacy at SOAS, University of London, having previously completed her BA in Politics and International Relations at SOAS.

Olga Mironova, MD, PhD, is cardiologist, whose major research interests are myocardial infarction, intensive care and multidisciplinary approach to the treatment of patients with inflammatory bowel diseases, psoriasis and several others, professor of the chair of Faculty Therapy #1 in Sechenov University since 2022, member of Council of mentors of young scientists of the Department of Medical Sceinces of the Russian Academy of Sciences. She has been working as a cardiologist in the acute cardiac care department in Russian Cardiology Research and Production Complex, founded by her grandfather, Eugene Chazov, for many years. Olga Mironova is a member of Eurasian Association of Cardiologists, European Society of Cardiology and European Renal Association-European Dialysis and Transplant Association and speaks English, French, Spanish and Russian languages. Past Russia/CIS Regional Vice-president.
The major scope of work now is to find opportunity for friendly and open dialog between countries and especially showing, how it can be done to the students and young doctors promoting peace, healthy lifestyle, well-being, gender equality and effective partnership in achieving these goals. Dr. Mironova is teaching students from Russia and all over the world both in Russian and in English.

Ira Helfand, MD is a member of the International Steering Group of the International Campaign to Abolish Nuclear Weapons, and Past President of the International Physicians for the Prevention of Nuclear War. He is also co-Founder and Past President of Physicians for Social Responsibility, IPPNW’s US affiliate, and a member of the Steering Committee of the Back from the Brink campaign. In 2023 he received the Gandhi King Ikeda Award from the Martin Luther King Jr. International Chapel at Morehouse College.
He has published in the New England Journal of Medicine, the Lancet, the British Medical Journal and the World Medical Journal on the medial consequences of nuclear war and has lectured for IPPNW about nuclear war in Russia, China, Japan, Korea, India, Pakistan, Israel, Turkey, Brazil, Mexico, Columbia, and across Europe and North America. He spoke at the 2013 and 2014 International Conferences on the Humanitarian Impact of Nuclear Weapons and chaired the session on the Humanitarian Impact of Nuclear Weapons at the UN Open Ended Working Group in 2016 that lead to the negotiation of the Treaty on the Prohibition of Nuclear Weapons the following year.

Cheryl Harrison is a biophysical oceanographer and assistant professor in the Department of Ocean and Coastal Science and the Center for Computation and Technology at Louisiana State University. She is Earth system model coordinator for the Fisheries Model Intercomparison Project (FishMIP), and a member of the Climate Intervention Biology Working Group. Her research interests include physical and biogeochemical ocean modeling, marine ecology, fisheries, impacts of nuclear winter, climate change, geoengineering and applied mathematics.

Dr. Jans Fromow-Guerra graduated with Honors from the National Autonomous University of Mexico (UNAM). He completed his specialization in Ophthalmology and Retina and Vitreous Surgery at the Association for the Prevention of Blindness in Mexico. He earned a Doctorate in Medical Sciences from UNAM and holds a Diploma in Higher Education in Strategic Management and Business from Universidad Iberoamericana.
He serves as Vice President of International Physicians for the Prevention of Nuclear War (IPPNW, Nobel Peace Prize 1985) and is a member of the International Campaign to Abolish Nuclear Weapons (ICAN, Nobel Peace Prize 2017).
In 2006, as part of IPPNW BOD he contributed in the process of conceptualization of ICAN within IPPNW. Through IPPNW, he participated in the Conferences on the Humanitarian Impact of Nuclear Weapons held in Oslo (2013), Nayarit (2014), and Vienna (2014).
His main areas of interest include the effects of military spending on health and development from a global health perspective, and the promotion of prevention through peace education. Since 2023, he has been a member of the Scientific Advisory Group of the Treaty on the Prohibition of Nuclear Weapons.

Dr. Angela Nambiro is a junior doctor from Kenya and a dedicated member of the International Physicians for the Prevention of Nuclear War (IPPNW) since 2019. As a former student representative for IPPNW Kenya, she was actively involved in advocacy and communication campaigns, including the "Bike for the Ban" initiative. As an African expert, Dr. Nambiro brings a unique perspective on the catastrophic humanitarian consequences of nuclear war. With a strong background in public health, mental health, and research, she passionately argues for the urgent need to ban these weapons.

I am a medical student and doctoral candidate in my final year, based in Berlin, Germany, and have gained valuable experience and perspective in both national and international work for peace and health over the last years serving as IPPNW's International Student Representative in our recent term, and previously as the German student representative.
My participation in the World Congress in Kenya, the Meetings of States Parties in New York, and the World Health Assembly, along with opportunities to contribute as a speaker at international forums, have not only expanded my knowledge but also reinforced my motivation to stay actively engaged in local and global activism.
The main focus of my work lies on the intersectional dimensions of nuclear war and disarmament, as well as amplifying youth voices. The climate crisis, migration, gender inequalities, and regional disparities all compound the risks and consequences of nuclear violence. At the same time, we need youth movements with hopeful perspectives for change to realise and continue our common goal for peace.

Prior to joining RECNA in 2012, she served as a researcher and Secretary-General at Peace Depot, a Yokohama-based non-profit organization dedicated to nuclear disarmament and peacebuilding. Her current work centers on analyzing global trends in nuclear disarmament and promoting both practical initiatives and theoretical research in peace and disarmament education. Her recent publications include the co-edited volume Getting to Nuclear Zero in Northeast Asia: The Nuclear-Weapon-Free Zone as a Vehicle for Change (Routledge, 2025).

David Onazi is a Senior Emergency Doctor working with a private hospital based in Abuja, Nigeria. He also serves as the International Councilor for Society of Nigerian Doctors for the Welfare of Mankind (SNDWM)- the Nigerian affiliate of IPPNW since 2014. He joined IPPNW as a student in 2005 and has graced student leadership positions as NSR for Nigeria 2006-2008, RSR for IPPNW Africa 2008-2010 and as ISR 2010 to 2012. David served as an at-large board member 2012 to 2014, during which he served as the deputy chair of the board from 2013 to 2014; he also served as an at-large board member from 2021 to 2023.The high point of his involvement with IPPNW was the presentation to United Nations Secretary General Ban Ki-moon of a petition of signatures by IPPNW doctors worldwide calling for an Arms Trade Treaty at the UN headquarters July 3rd 2012. David also pioneered the IPPNW Nigeria radio education project on armed violence prevention in 2009 that quickly became widely accepted and commended; he is still involved in the radio project. Most recently David was vital in lobbying his country’s key officials to ratify the TPNW in August 2020.
David brings to the IPPNW board a passion to bridge the gap between the global north and south in his contribution to the IPPNW cause. He also seeks to inspire other countries in the global south to sign and ratify the TPNW and to push for universalization of the TPNW . Lastly, he seeks to inspire the Aiming for Prevention campaign in a world with increasing small arms violence.

Kjølv Egeland is a senior researcher at NORSAR, a research institute in Norway. Egeland’s research focuses on global governance, risk, and nuclear arms control and disarmament. He completed his PhD at the University of Oxford in 2018 and subsequently spent four years as a postdoctoral fellow at Sciences Po in Paris. Egeland is the author of The Struggle for Abolition: Power and Legitimacy in Multilateral Nuclear Disarmament Diplomacy (Routledge, 2024).

Dr. Kazuko Hikawa currently serves as the Vice Director of and professor at the Research Center for Nuclear Weapons Abolition and at the Research Center for Global Risk at Nagasaki University in Japan. She is also an Adjunct Fellow of the Japan Institute of International Affairs. Prior to her academic career, Dr. Hikawa served as a diplomat with the Japanese Foreign Service for 24 years. Throughout her career, she has been actively involved in the NPT Review Process since 2002. She has held various positions, including Assistant to the Chair of the 2007 NPT Preparatory Committee and Assistant to the Chair of Main Committee III at the 2010 NPT Review Conference. In 2013, Dr. Hikawa was appointed as a Special Assistant for Arms Control, Disarmament, and Non-Proliferation Issues at the Ministry of Foreign Affairs of Japan. She has also served as the Deputy Director of the Non-proliferation, Science and Nuclear Energy Division, where she focused on IAEA safeguards issues. From 2021 to 2023, Dr. Hikawa was a member of the UN Group of Governmental Experts on Nuclear Disarmament Verification. During this time, she contributed to the adoption of a report to the UN Secretary General by consensus.

Kimiaki Kawai is a researcher with expertise in international law, especially the law on the use of force and International Humanitarian Law. He studies nuclear weapons issues from the perspectives of both international law and civil society. After serving as Director of the Soka Gakkai Peace Committee until October 2019, he worked as a Research Fellow at the Toda Peace Institute before assuming his current position in April 2023 as Professor at the Research Center for Nuclear Weapons Abolition, Nagasaki University (RECNA). Kawai participated in the UN Conference to negotiate the Treaty on the Prohibition of Nuclear Weapons in 2017 as a member of civil society, while serving in the secretariat of the Japan NGO Network for Nuclear Weapons Abolition. He holds an MA in Political Science from Aoyama Gakuin University and a PhD from Nagasaki University. His main publication includes “Japan’s Reliance on US Extended Nuclear Deterrence: Legality of Use Matters Today,” Journal for Peace and Nuclear Disarmament, Vol. 5, No. 1 (2022), pp. 162-184.

Dr Sue Wareham has been a very active member of the Medical Association for Prevention of War (Australia) since the early 1980s. She has spoken and written widely on a range of peace, disarmament and justice issues, with nuclear weapons abolition being a key goal of her advocacy. She is currently President of MAPW, and is a past board member of ICAN Australia, and of IPPNW. She is also on the committee of Australians for War Powers Reform, which seeks to reform the process by which Australians are sent to war.
In 2006 Sue was awarded the Medal of the Order of Australia (OAM) for service to the community and to the peace movement. In 2018 she received the inaugural ACT (Australian Capital Territory) Chief Minister’s Rotary Peace Award.
Dr Wareham worked for approximately 35 years in general practice in Canberra, before retiring from clinical practice.

Born in Japan. In 2008, Mr Kawasaki initiated the “Global Voyage for a Nuclear-Free World: Peace Boat Hibakusha Project.” In 2009-2010, he served as an NGO Advisor to the Co-chairs of the International Commission on Nuclear Non-Proliferation and Disarmament (ICNND). Kawasaki joined the ICAN for Peace Boat in 2010, served as Co-chair (2012-2014), and now serves as President of the Swiss-registered association of ICAN. He is a Co-chair of the Japan NGO Network for Nuclear Weapons Abolition as well as Board Chair of the Japan Campaign to Abolish Nuclear Weapons. Kawasaki lectures at Rikkyo University, Tokyo. He was awarded the 33rd Kiyoshi Tanimoto Peace Prize by Hiroshima Peace Center in 2021.

LEE, Youngah (Manager of the Center for Peace and Disarmament, People's Solidarity for Participatory Democracy (PSPD))
LEE Youngah is working at PSPD as a manager of the Center for Peace and Disarmament and is also working at the secretariat of the Korea Peace Action Campaign. She has worked on peace, disarmament, international conflict and human rights issues since 2010, and joined PSPD in 2014. She works on monitoring government policies on national defense and diplomacy, advocating for peace, disarmament and a nuclear-free zone in Northeast Asia.

Dr. Ruth Mitchell is a neurosurgeon and cancer researcher based in Sydney, Australia. She joined IPPNW in her first year of medical school in 2004, and has previously served as International Student Representative, Regional Vice President for South East Asia Pacific, and as Deputy Chair of the Board of IPPNW. As a medical student she participated in the Nuclear Weapons Inheritance Project, including dialogues in China, Russia and the United Kingdom.
Dr. Mitchell has been an active member of the Medical Association of the Prevention of War (Australia) since 2004, and has served as Student Representative and Vice President of that IPPNW affiliate.
She has been involved in the work of the International Campaign for the Prevention of Nuclear War (ICAN) since its inception, and is currently Co-Chair of the Board of ICAN Australia.
Ruth is passionate about strengthening the peace movement around the world and ensuring our work is intentionally anti-racist, feminist, decolonising, and environmentally sustainable.
As an activist doctor, Ruth believes in the power of bearing witness and listening carefully to the stories from the bedside. Centering and amplifying the voices of survivors of both nuclear weapons and small arms is of paramount importance to her.

President, Hiroshima Prefectural Medical Association / Chairman, Matsumura Cardiovascular and Surgical Clinic / Cardiovascular Surgeon / Co-President, JPPNW (Japanese Physicians for the Prevention of Nuclear War)
After graduating from Hiroshima University Faculty of Medicine, he specialized in cardiovascular surgery and engaged in clinical practice and research at Hiroshima University Hospital and other institutions. He has long been involved in surgical treatment of cardiac and major vascular diseases, while continuing to serve on the frontlines of community healthcare as Chairman of the Matsumura Cardiovascular and Surgical Clinic.
After serving as President of the Hiroshima City Medical Association, he was elected as President of the Hiroshima Prefectural Medical Association in 2020, where he has dedicated himself to reforming physicians’ work styles, building a sustainable community healthcare system, improving public health, and fostering the next generation of physicians.
As President of the JPPNW, he has consistently appealed for the abolition of nuclear weapons and the realization of peace both domestically and internationally. He has also actively participated in medical examinations for atomic bomb survivors in North and South America, supporting the health of those living abroad.
From his position as a physician in Hiroshima, the site of the atomic bombing, and as a doctor of the second generation of atomic bomb survivors, he continues to convey to the international community and Japanese government the importance of peace and the abolition of nuclear weapons. His belief is that "there is no prescription for nuclear war, only the abolition of nuclear weapons."

Megumi Yamaura-Teshima has served as a member of the Board of Directors at the International Council of Nurses (ICN) since 2021 and as Second Vice President since June 2025. She is a Vice President and Dean of Graduate Studies at Tokyo Healthcare University, as well as a Professor Emeritus at Chiba University. She has served as an associate member of the Science Council of Japan since 2023.
Her areas of study are nursing management and ethics; she contributed to the revising committee of the Code of Ethics for the International Council of Nurses and the Japanese Nursing Association. She published the second edition of Future Ethics and Nursing in 2025.

Enas Osama is a final-year medical student from Sudan and the Immediate Past Liaison Officer for Human Rights and Peace Issues at the International Federation of Medical Students’ Associations (IFMSA). With over seven years of experience in global health and youth advocacy, she has worked extensively on issues linking health, human rights, and peace.
In her role with IFMSA, Enas advanced global advocacy, policy development, and partnerships with UNHCR, WHO’s Health and Migration Programme, IFRC, the Lancet Commission, UNRWA, and IPPNW. Her work has focused on refugee and migrant health, equity in global health, and the role of medical students in advancing human rights and peacebuilding.
She has authored policy documents on justice and equity in global health, trained youth leaders in human rights and disaster medicine, and coordinated campaigns addressing displacement and structural discrimination. Enas is passionate about amplifying youth voices and strengthening the role of health professionals in creating a more just, peaceful, and equitable world.

Dr Sandro Demaio took up his position as Director and Head of the WHO Asia-Pacific Centre for Environment and Health, based in Seoul, Republic of Korea, in February 2025. He brings a unique blend of academic expertise, executive leadership, and global health experience to the Centre’s mission of addressing the health impacts of environmental change across the Asia-Pacific region.
Prior to this role, Dr Demaio served as Chief Executive Officer of VicHealth, the health promotion agency for the state of Victoria, Australia. He also held the position of CEO at EAT, a global non-profit organization dedicated to transforming food systems for the health of people and the planet.
Originally trained as a medical doctor in Australia, Dr Demaio previously worked as a Medical Officer and technical advisor at WHO Headquarters in Geneva, where he contributed to major global initiatives on noncommunicable diseases and public health policy.
With a strong commitment to advancing health through environmental sustainability and climate action, Dr Demaio leads the Centre’s efforts to drive evidence-based policy, foster multisectoral collaboration, and support countries across the Western Pacific Region.
He holds a Bachelor of Medicine and Bachelor of Surgery, as well as a Master’s and PhD in Public Health and Epidemiology. He remains active in academic circles, currently holding a professorship, and has previously held honorary appointments with the Johns Hopkins Bloomberg School of Public Health and the University of Melbourne.