International Physicians
for the Prevention of Nuclear War

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Read the IPPNW World Congress Nagasaki Declaration
"We join our voices with those of the Hibakusha here in Nagasaki in calling for action for a more peaceful world and the prevention of nuclear war as an absolute imperative requiring the elimination of nuclear weapons."
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IPPNW Global Classroom
Are you concerned by the direction the world is moving in? Do you want to learn more about nuclear weapons and the risks they pose to human and environmental health?
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IPPNW Condemns Strikes Against Iran, Calls for Return to Negotiations
"There is no military solution to the problem of nuclear weapons proliferation anywhere in the world, particularly in the Middle East. The need for regional and international efforts to negotiate a nuclear-weapons-free Middle East have never been more urgent."
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Disarmament for Climate Justice and Health
Militarism, the climate crisis, and planetary health are deeply interconnected. As physicians and health workers, we warn that the climate crisis, militarisation, and nuclear weapons pose an acute threat to human and environmental health.
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Support our Work
The risk of escalation to the use of nuclear weapons is very real—by accident, misunderstanding or intentionally. IPPNW is doing everything in our power to prevent the unthinkable. Join us to support peace and prevent any use of nuclear weapons.
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Over 150 Medical Journals Issue Urgent Call for Elimination of Nuclear Weapons
The editorial calls on health professionals to, "join with the IPPNW to support efforts to reduce the near-term risks of nuclear war".
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Billions At-Risk of Starvation
“Nuclear Famine,” a report published by IPPNW, summarizes the latest scientific work, which shows that a so-called “limited” or “regional” nuclear war would be neither limited nor regional. On the contrary, it would be a planetary-scale event.
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Nuclear Weapons

IPPNW demonstration against nuclear weapons and nuclear war

Nuclear weapons threaten everything you know and love.

IPPNW is the only international medical organization dedicated to the abolition of these indiscriminate and illegal weapons. Together, we have a common-sense plan for their complete, irreversible elimination.

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Nuclear Power is Not the Solution

Tuesday, 14 April, 2026 | 15:00 GMT

Join us on Tuesday, April 14th for a timely webinar exploring the risks associated with nuclear power and challenging the myth that it offers a simple, safe, carbon-free solution to the climate crisis.

Taking place in the context of the 40th anniversary of the Chernobyl nuclear disaster and the upcoming Nuclear Non-Proliferation Treaty (NPT) Review Conference, this discussion will reflect on past lessons while looking ahead to a nuclear-free future.

Expert speakers include:

  • Linda Pentz Gunter, Beyond Nuclear,
    • highlighting overall dangers of nuclear power,
  • Dr. Paul Saoke, IPPNW Kenya,
    • highlighting reflections from his 2025 book on extractive practices of uranium mining across the continent,
  • Tim Jusdon, Nuclear Information and Resource Service,
    • highlighting nuclear power expansion in response to AI energy needs,
  • Vladimir Slyviak, Ecodefense,
    • highlighting Zaporizhzhia and risks in war zones

 

This session is organized by IPPNW’s Climate Working Group. 

Learn More and Register

Nuclear Armed Nations

Nuclear armed nations

9 nuclear armed states – US, UK, Russia, China, France, India, Pakistan, Israel, North Korea- possess approximately 12,000 nuclear weapons.  These arsenals, possessed by only a few countries, have the power to destroy the world as we know it many times over. Only 3% of their nuclear power could kill up to every 3rd person on earth.

Nuclear Abolition

IPPNW Global Network

IPPNW global federation against nuclear weapons

Around the clock, IPPNW affiliates are working to rid the world of the nuclear threat. Our affiliates know that the only answer to this existential threat is total abolition. We are hard at work to achieve this reality through the UN Treaty on the Prohibition of Nuclear Weapons.

IPPNW affiliate network

Peace and Health Blog

  • Was Trump’s nuclear threat serious?
    by Xanthe Hall on April 10, 2026 at 10:40 am

    On 7 April, US President Donald Trump issued an ultimatum to Iran: either make a deal with him to end the war by 8 pm US Eastern Time (2400 GMT), or “a whole civilisation will die tonight, never to be brought back again”. Trump’s rhetoric has frequently been overstated, but was this a serious threat

  • PSR, IPPNW, and PHR Call for an End to All Fighting in Iran
    by IPPNW on April 7, 2026 at 5:39 pm

    Full statement here and below. April 7, 2026. The war between the United States, Israel, and Iran has continued to escalate over more than a month, with impacts expanding across the region and beyond. Physicians for Social Responsibility, Physicians for Human Rights, and International Physicians for the Prevention of Nuclear War renew our call for an immediate end to

  • The ongoing Fukushima nuclear disaster 15 years on: a photoessay
    by Tilman Ruff on April 2, 2026 at 11:30 am

    It is now 15 years since the Great East Japan Earthquake on 11 March 2011—and the tsunami it generated—wrought havoc on the Fukushima Daiichi Nuclear Power Plant (FDNPP). A predictably dangerous plant design, a corrupt and negligent operator, and Japan’s incestuous and corrupted ‘nuclear village’ involving collusion and revolving doors between government, regulator and operators,

  • Why Peace Belongs in Medical Education: Reflections from the 75th IFMSA General Assembly
    by IPPNW on March 16, 2026 at 7:25 pm

    by Anna Khouri, IPPNW International Student Representative, Germany Last week, I had the privilege of representing International Physicians for the Prevention of Nuclear War (IPPNW) at the 75th General Assembly of the International Federation of Medical Students’ Associations in Copenhagen. Bringing together nearly 900 medical students from more than 120 countries, the gathering was a

  • International law needs international enforcement
    by Lawrence Wittner on March 10, 2026 at 2:59 pm

    Donald Trump’s war of choice in the Middle East is but the latest indication that the system of international law―which provides guidelines for the behavior of nations in world affairs―is crumbling. In the late nineteenth and twentieth centuries, after thousands of years of violent international conflict, efforts to establish global norms for nations in connection

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