International Union of Scientists

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The US-Israeli war on science is an assault on our future

The US-Israeli war on science is an assault on our future

The International Union of Scientists condemns the American-Israeli killings of scientists and bombing of universities. On 12 March 2026, the Israeli military killed Dr. Hussein Bazzi, chemistry professor and Dean of the Faculty of Sciences, and Dr. Mortada Srour, Professor of Chemistry and Physics, two scientists at the Lebanese University’

Manifesto: Scientists against War. For Peace, Cooperation and Development.

Manifesto: Scientists against War. For Peace, Cooperation and Development.

Carlo Rovelli on Nuclear Risk, Militarization, and the Responsibility of Scientists

Carlo Rovelli on Nuclear Risk, Militarization, and the Responsibility of Scientists

IUS Condemns US-Israeli Military Aggression Against Iran

IUS Condemns US-Israeli Military Aggression Against Iran

In Solidarity With the Cuban People

In Solidarity With the Cuban People

China's socialist experiment: Crossing the river by feeling the stones

China's socialist experiment: Crossing the river by feeling the stones

Quantum Scientists Publish a Manifesto Against the Militarization of Research

Quantum Scientists Publish a Manifesto Against the Militarization of Research

Take action

Manifesto: Scientists against War. For Peace, Cooperation and Development.

Manifesto: Scientists against War. For Peace, Cooperation and Development.

This Manifesto was issued by OTC – Organização dos Trabalhadores Científicos, Portugal. Sign the petition HERE. Versão Portuguesa. Version française. Versión española. We are living through difficult and dangerous times on our planet, the only known natural celestial body that harbours life. As men and women of science, we know the

Quantum Scientists Publish a Manifesto Against the Militarization of Research

Quantum Scientists Publish a Manifesto Against the Militarization of Research

Sign Petition: Demilitarize UK Universities

Sign Petition: Demilitarize UK Universities

Stand with Scientists Against War and Militarization of Science: Endorse the IUS Statement

Stand with Scientists Against War and Militarization of Science: Endorse the IUS Statement

Against Militarization: Scientists Unite in Opposition to EU Rearmament

Against Militarization: Scientists Unite in Opposition to EU Rearmament

Demand that Emory University Reinstate Umaymah Mohammad

Demand that Emory University Reinstate Umaymah Mohammad

Protest on both sides of a canal and on a bridge at the University of Amsterdam, 2024.

Petition: Stop European funding for Israeli institutions

Events

Livestream: The Palestine Laboratory

Livestream: The Palestine Laboratory

A conversation with Antony Loewenstein Transcript The Palestine Laboratory: How Israel Uses Genocide to Test and Sell Weapons International Union of Scientists Discussion Transcript Watch the video above, on Youtube, or on Rumble. Speakers: * Manabendra Nath Bera - Coordinating Committee Member, International Union of Scientists (Moderator) * Antony Loewenstein - Author

An Elbit Systems drone, a key link in the Israeli kill-chain, on display at a trade show in Manila.

The Palestine Laboratory: how Israel uses genocide to test & sell weapons

Webinar: International student movements against genocide in Palestine

Webinar: International student movements against genocide in Palestine

Al-Quds at night

Watch: Technology for apartheid and genocide

IUS Webinar poster: Jane Duncan and Matt Mahmoudi

Webinar announcement: Technology for apartheid and genocide

Image of Professor Richard Falk, keynote speaker at the Convention.

International Convention Against War and Destructive Use of Science: Scientists Against Israeli Apartheid, Occupation and Genocide in Gaza

News

IUS Condemns US-Israeli Military Aggression Against Iran

IUS Condemns US-Israeli Military Aggression Against Iran

We, in the International Union of Scientists (IUS), strongly and unequivocally condemn the wanton military attack on Iran by the USA and its Israeli accomplice, carried out under the pretext of a “preventive” strike, at a time when active negotiations were going on between Iran and the USA for a

In Solidarity With the Cuban People

In Solidarity With the Cuban People

Join the Conversation on 'Genocide and Ecocide: The Interconnected Crimes Against Humanity and Nature'

Join the Conversation on 'Genocide and Ecocide: The Interconnected Crimes Against Humanity and Nature'

Photo by Joe Yates on Unsplash

Addressing the elephant in the room: scientists speaking up against militarism

In the name of humanity, the barbarism in Gaza must stop

In the name of humanity, the barbarism in Gaza must stop

Webinar: Science for Peace – 70 Years after the Einstein-Russell Manifesto

Webinar: Science for Peace – 70 Years after the Einstein-Russell Manifesto

Webinar on Being Jewish After the Destruction of Gaza: A Reckoning

Webinar on Being Jewish After the Destruction of Gaza: A Reckoning

Perspectives

Carlo Rovelli on Nuclear Risk, Militarization, and the Responsibility of Scientists

Carlo Rovelli on Nuclear Risk, Militarization, and the Responsibility of Scientists

A conversation with Adam Claridge-Chang This conversation was recorded in February 2025 — just before the US-Israeli attack on Iran. It marks the first anniversary of the Scientists Against Rearmament manifesto, co-authored by Carlo Rovelli. The manifesto calls on scientists, engineers, and scholars across Europe to resist the EU's

China's socialist experiment: Crossing the river by feeling the stones

China's socialist experiment: Crossing the river by feeling the stones

Quantum Scientists Publish a Manifesto Against the Militarization of Research

Quantum Scientists Publish a Manifesto Against the Militarization of Research

For a Middle East free of nuclear weapons and other weapons of mass destruction

Militarism: A Leading Cause of Environmental and Climate Crises

Militarism: A Leading Cause of Environmental and Climate Crises

Global Violence and Childhood Trauma: Implications for Research and Action

Global Violence and Childhood Trauma: Implications for Research and Action

Two actionists on a roof using paint to disrupt a weapons factory.

On Pacifism

Events

More

Livestream: The Palestine Laboratory

The Palestine Laboratory: how Israel uses genocide to test & sell weapons

Webinar: International student movements against genocide in Palestine

Watch: Technology for apartheid and genocide

Webinar announcement: Technology for apartheid and genocide