Nuclear Threat Initiative

Nuclear Threat Initiative

@nti.org

A nonprofit, nonpartisan global security organization focused on reducing nuclear, biological, and emerging tech threats imperiling humanity.

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Nuclear Threat Initiative reposted

Proud of the excellent caliber of the young scientists part of this cohort! Thanks @nti.org and @theelders.bsky.social for this unique opportunity!

As technological advancement reshapes the global risk landscape, NTI and @theelders.bsky.social are convening a cohort of rising biosecurity leaders alongside members of The Elders to foster intergenerational exchange. Learn more. ⤵️ www.nti.org/news/nti-and...

This week marks 64 years since the Cuban Missile Crisis. Filmmaker James Cameron spoke about the impact this moment had on him and his career going forward.

The U.S. has publicly acknowledged, for the first time, that it possesses “on-orbit space control weapons,” bringing a long-running debate into the public spotlight. Join us online or in person November 4 at 10:00 AM ET for a conversation about reducing risks amid growing competition in space. ⤵️

nti.orgWeapons in Orbit: Reducing Risk in a New Era of Space CompetitionGrounded in NTI's work on nuclear risks in outer space, this conversation will explore how military use and commercial competition in space is evolving, the role space-based systems play in nuclear…

Sixty-four years ago this week, the world edged toward the brink. On October 16, 1962, President Kennedy was shown aerial photographs revealing Soviet nuclear missile sites under construction in Cuba, just 90 miles from the U.S. coast. 🧵

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Fortunately, they chose to deliberate, weigh the risks, and keep communication channels open rather than rush to escalation. Today, as nuclear risks grow, the lessons of 1962 remain urgent.

The Cuban Missile Crisis began with a surprise and a split-second judgment call. It reminds us that preventing catastrophe requires steady leadership, clear communication, and a shared commitment to humanity's survival, before a crisis begins.

Sixty-four years ago this week, the world edged toward the brink. On October 16, 1962, President Kennedy was shown aerial photographs revealing Soviet nuclear missile sites under construction in Cuba, just 90 miles from the U.S. coast. 🧵

The 13 days that followed would bring the world closer to nuclear war than ever before or since. That first morning set the stakes. Kennedy and his advisers faced a choice between military action and diplomacy, with the fate of millions hanging on every decision.

Nuclear energy ambitions across Southeast Asia are higher than ever. Governments are facing consequential choices that could determine whether nuclear energy becomes a problem-solver or a problem-maker. NTI’s Ross Matzkin-Bridger explains the stakes in a paper published by the Hinrich Foundation. 🧵

hinrichfoundation.comSoutheast Asia’s weighty decisions for a nuclear energy era | White Paper | Hinrich FoundationFour consequential choices could determine whether nuclear energy becomes a problem-solver or a problem-maker for Southeast Asia.
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Choice 4: What happens to the waste? A winning plan: Fund waste management early, build interim storage before the reactors, and consider a regional approach to final disposition. The idea of reprocessing spent fuel brings intractable technical problems, cost challenges, and geopolitical scrutiny.

Nuclear energy ambitions across Southeast Asia are higher than ever. Governments are facing consequential choices that could determine whether nuclear energy becomes a problem-solver or a problem-maker. NTI’s Ross Matzkin-Bridger explains the stakes in a paper published by the Hinrich Foundation. 🧵

hinrichfoundation.comSoutheast Asia’s weighty decisions for a nuclear energy era | White Paper | Hinrich FoundationFour consequential choices could determine whether nuclear energy becomes a problem-solver or a problem-maker for Southeast Asia.
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Choice 2: Which technology? The global nuclear reactor market is flooded with over 100 different designs. If the goal is power at scale within 15 years, focus on ready-to-deploy and on-the-cusp technologies, SMRs included. Don't confuse deployable assets with science projects.

hinrichfoundation.comSoutheast Asia’s weighty decisions for a nuclear energy era | White Paper | Hinrich FoundationFour consequential choices could determine whether nuclear energy becomes a problem-solver or a problem-maker for Southeast Asia.

Choice 3: Where does the fuel come from? 1 supplier to handle all pieces of the fuel supply chain is simple, but builds dependency. Going fully domestic is costly & draws scrutiny. Likely sweet spot: diverse suppliers, + pieces of the supply chain, such as fuel fabrication, built in the region.

hinrichfoundation.comSoutheast Asia’s weighty decisions for a nuclear energy era | White Paper | Hinrich FoundationFour consequential choices could determine whether nuclear energy becomes a problem-solver or a problem-maker for Southeast Asia.

Nuclear energy ambitions across Southeast Asia are higher than ever. Governments are facing consequential choices that could determine whether nuclear energy becomes a problem-solver or a problem-maker. NTI’s Ross Matzkin-Bridger explains the stakes in a paper published by the Hinrich Foundation. 🧵

hinrichfoundation.comSoutheast Asia’s weighty decisions for a nuclear energy era | White Paper | Hinrich FoundationFour consequential choices could determine whether nuclear energy becomes a problem-solver or a problem-maker for Southeast Asia.

Choice 1: Who owns the reactor? A nuclear deal can last a century, longer than most political coalitions and vendors. Own and operate the reactor yourself, and you take more risk, but gain energy security, skills, and a workforce. Foreign ownership flips that trade.

hinrichfoundation.comSoutheast Asia’s weighty decisions for a nuclear energy era | White Paper | Hinrich FoundationFour consequential choices could determine whether nuclear energy becomes a problem-solver or a problem-maker for Southeast Asia.

Angela Guo is a high school student who has spent the past year researching the impacts of nuclear testing on the Marshall Islands and recently published her first book, “At the Tide’s Mercy: Voices from the Marshallese Exodus”.

nti.orgNTI Young Voices: Angela GuoAngela Guo is a high school student from Hong Kong currently studying at Phillips Academy Andover. She has spent the past year researching the impacts of nuclear testing on the Marshall Islands and…

The United States has publicly acknowledged for the first time that it possesses “on-orbit space control weapons,” bringing a long-running debate about deterrence, stability, and escalation in space into the public spotlight.

nti.orgWeapons in Orbit: Reducing Risk in a New Era of Space CompetitionGrounded in NTI's work on nuclear risks in outer space, this conversation will explore how military use and commercial competition in space is evolving, the role space-based systems play in nuclear…

Last night, we hosted a reception and fireside chat to highlight the Africa Health Security Index. Participants engaged in a discussion about health security preparedness, resilience, and opportunities for cross-sector collaboration. Learn more: ghsindex.org/africa/

When motivated actors can use biological AI tools to evade DNA synthesis screening, how can DNA providers be more confident that the sequences they assemble and ship are safe? Our recent blog explains the work by Google DeepMind’s biosecurity and provenance teams to strengthen guardrails.

nti.orgInnovation Enables Responsibility: Watermarking to Strengthen DNA Synthesis ScreeningIn a world where motivated actors can use biological AI tools to evade DNA synthesis screening, how can DNA providers be more confident that the sequences they assemble and ship are safe? Google…

The security landscape is changing, and so is who shapes it. NTI's CEO, Christine Wormuth joined a @wef panel this week on public-private cooperation, highlighting the private sector's expanding role in nuclear risk reduction and crisis prevention.

"The Trump and Xi summit today may offer an opportunity to begin filling the leadership vacuum on AI advances, especially with respect to bioweapons. If the reports from AI companies are correct, it’s imperative that Presidents Trump and Xi start this work now." Read more. ⤵️

nti.orgTrump-Xi Summit: Perception, Not Capability, May Drive AI-Bioweapons RisksThe Trump and Xi summit today may offer an opportunity to begin filling the leadership vacuum on AI advances, especially with respect to bioweapons. If the reports from AI companies are correct, it’s…

34 years ago, the U.S. conducted the last nuclear weapons test at the Nevada Test Site. Shortly after, President George H.W. Bush signed a moratorium that brought explosive nuclear weapons testing to an end. No country, other than North Korea, has conducted an explosive nuclear weapons test since.

A recent poll by NTI and ReThink Media reflects heightened awareness of AI, nuclear, and biological risks. An overwhelming majority of respondents said they support the United States working with China to mitigate these risks.

Climate change is increasing the risk of infectious disease outbreaks, threatening health security around the world. As world leaders gather this week for the 81st session of the United Nations General Assembly, Africa's experience shows why climate change and health cannot be separated.

nti.orgBridging Climate Action and Health Security through One HealthClimate change is increasing the risk of infectious disease outbreaks, threatening health security around the world. A One Health approach is essential to managing growing risks at the intersection…

As President Trump and President Xi prepare to meet this week, new YouGov polling commissioned by NTI and ReThink Media finds that nearly an overwhelming majority also supports working with China to mitigate nuclear, biological, and AI risks.

As President Trump and President Xi prepare to meet in Washington on September 24, new YouGov polling commissioned by NTI and ReThink Media finds that nearly an overwhelming majority also supports working with China to mitigate nuclear, biological, and AI risks.

"The integration of AI into nuclear systems is underway. The guardrails, safety, and security frameworks needed to understand and manage the consequences are not. A new generation of AI-informed nuclear fail-safe reviews is urgently needed in all countries with nuclear weapons." ⤵️

nti.orgAI Is Moving Into Nuclear Weapons Systems. Fail-Safe Reviews Are Critical.The integration of AI into nuclear systems is underway. The guardrails, safety, and security frameworks needed to understand and manage the consequences are not. A new generation of AI-informed…

"AI-enabled biology will keep expanding what’s possible. NTI’s job is to make sure the guardrails expand just as fast, so that promise doesn’t outpace the safety of everyone it’s meant to help. This is the work NTI has done and will continue doing," writes NTI's Jake Jordan in our recent blog. ⤵️

nti.orgNTI at 25: Fostering Innovation Through Technology GovernanceAs NTI celebrates 25 years of impact, we remain committed to reducing the risks of accidental release and deliberate misuse of life science innovations, strengthening global biosecurity, and guiding…

The 2026 Nuclear Security Index reveals an alarming deterioration in nuclear security conditions in Russia and the United States, the countries that bear the greatest responsibility for global nuclear security as custodians of the vast majority of the world’s weapons-usable nuclear materials.

Read more about our report at NTIIndex.org.

The Washington Post@washingtonpost.com

A new expert report assesses a “dramatic deterioration” in nuclear safety conditions in the United States, due primarily to the “erosion of the independence” of the Nuclear Regulatory Commission under the Trump administration.

The 2026 NTI Nuclear Security Index reveals an alarming deterioration in nuclear security conditions in Russia and the United States, the countries that bear the greatest responsibility for global nuclear security as custodians of the vast majority of the world’s weapons-usable nuclear materials.

The NTI Index provides countries and areas with an agenda for action to usher in a new era of nuclear security leadership: specific recommendations tied to the data that governments can implement to close the gaps identified. Learn more about the recommendations at NTIIndex.org.

At a moment when nuclear security risks are rising and global readiness is not keeping pace the 2026 NTI Nuclear Security Index offers an actionable agenda for countries to strengthen their nuclear security leadership.

Join NTI and the UK Department for Energy Security and Net Zero during the IAEA General Conference for the publication event, where you’ll see the new data, hear NTI’s expert analysis on where action is needed most, and learn from the countries leading by example.