Gregory Kulacki
@gkucs.bsky.social
Director, East Asia, Global Security Program, Union of Concerned Scientists. Non-Resident Fellow, Research Center for the Abolition of Nuclear Weapons at Nagasaki University. Cross-cultural sojourner.
One unavoidable and less romantic aspect of organizing an International dialogue of great consequence.
November 15, 2025 at 1:23 AM
One unavoidable and less romantic aspect of organizing an International dialogue of great consequence.
Reposted by Gregory Kulacki
My brilliant @ucs.org colleague Chanese Forté interviews two other brilliant folks, Dr. Jan Beyea, and @nucsafetyucs.bsky.social, on the Trump administration's moves to undermine sensible, science-based limits on radiation exposure. Team Trump seems to wants to promote nuclear power at any cost.
Will Politics Put More People’s Health at Risk from Radiation Exposure?
The Trump administration's attack on the science underlying regulations that protect the public from the health risks of radiation exposure could affect many government rules.
blog.ucs.org
November 6, 2025 at 7:18 PM
My brilliant @ucs.org colleague Chanese Forté interviews two other brilliant folks, Dr. Jan Beyea, and @nucsafetyucs.bsky.social, on the Trump administration's moves to undermine sensible, science-based limits on radiation exposure. Team Trump seems to wants to promote nuclear power at any cost.
"These executive orders are trying to change the agreed-upon scientific model (LNT) and approach to decisionmaking (ALARA)...Over time, doses would increase across society, including in medical facilities."
Will Politics Put More People’s Health at Risk from Radiation Exposure?
The Trump administration's attack on the science underlying regulations that protect the public from the health risks of radiation exposure could affect many government rules.
blog.ucs.org
November 5, 2025 at 5:06 PM
"These executive orders are trying to change the agreed-upon scientific model (LNT) and approach to decisionmaking (ALARA)...Over time, doses would increase across society, including in medical facilities."
"At this point, China alone already has 50 percent more production capacity for PV panels than is thought to be necessary to hit an “optimized” Net Zero trajectory for CO2 emissions."
November 2, 2025 at 3:32 PM
"At this point, China alone already has 50 percent more production capacity for PV panels than is thought to be necessary to hit an “optimized” Net Zero trajectory for CO2 emissions."
The day after Trump suggested the US would resume explosive nuclear testing "immediately," the US was the only nation to vote against a UN statement affirming the importance of the treaty that prevents it.
November 2, 2025 at 3:16 PM
The day after Trump suggested the US would resume explosive nuclear testing "immediately," the US was the only nation to vote against a UN statement affirming the importance of the treaty that prevents it.
Reposted by Gregory Kulacki
In this piece, my colleague @gkucs.bsky.social discusses the implications and potential Chinese response to Trump's recent suggestion that the US will resume nuclear testing. China has much more to gain from testing than the US and its not clear POTUS knows this. @ucs.org #Nukesky
China Has the Most to Gain from New Nuclear Tests
President Trump announced the United States will resume nuclear testing, but if China follows suit, he may regret this decision.
blog.ucs.org
October 31, 2025 at 3:41 PM
In this piece, my colleague @gkucs.bsky.social discusses the implications and potential Chinese response to Trump's recent suggestion that the US will resume nuclear testing. China has much more to gain from testing than the US and its not clear POTUS knows this. @ucs.org #Nukesky
"Sometime in the next few days Xi will receive a briefing from his nuclear weapons laboratories that will almost certainly contain an assessment of what China stands to gain if the existing taboo on explosive nuclear testing is broken by the United States."
China Has the Most to Gain from New Nuclear Tests
President Trump announced the United States will resume nuclear testing, but if China follows suit, he may regret this decision.
blog.ucs.org
October 31, 2025 at 3:25 PM
"Sometime in the next few days Xi will receive a briefing from his nuclear weapons laboratories that will almost certainly contain an assessment of what China stands to gain if the existing taboo on explosive nuclear testing is broken by the United States."
"By withholding soybean purchases and rare-earth exports, China extracted relief from U.S. tariffs and delayed export controls, without conceding much in return."
The Art of Letting Trump Claim a Win, While Walking Away Stronger
www.nytimes.com
October 30, 2025 at 12:21 PM
"By withholding soybean purchases and rare-earth exports, China extracted relief from U.S. tariffs and delayed export controls, without conceding much in return."
Reposted by Gregory Kulacki
The president has ordered the “Department of War” to immediately resume nuclear testing. Here’s a thread on what you need to know (1/n)
October 30, 2025 at 4:33 AM
The president has ordered the “Department of War” to immediately resume nuclear testing. Here’s a thread on what you need to know (1/n)
"The Chinese are also pursuing technologies that use less uranium, such as thorium reactors, or recycle spent nuclear fuel. It’s a recognition that China doesn’t have enough domestic uranium for a massive build-out of traditional reactors."
How China Raced Ahead of the U.S. on Nuclear Power (Gift Article)
The United States was once the undisputed leader in atomic energy. Now it is trying to catch up.
www.nytimes.com
October 30, 2025 at 12:40 AM
"The Chinese are also pursuing technologies that use less uranium, such as thorium reactors, or recycle spent nuclear fuel. It’s a recognition that China doesn’t have enough domestic uranium for a massive build-out of traditional reactors."
"The GMD test program is like T-ball practice when the real world is major league baseball. It’s irresponsible to say the GMD system provides effective protection when it has not been demonstrated to work in conditions expected in a real conflict…"
A House of Dynamite Gets It Right—But Here’s the Full Picture
The Pentagon is wrong to attack the movie for being inaccurate. We cannot rely on missile defense systems to protect us from nuclear destruction.
blog.ucs.org
October 29, 2025 at 2:24 PM
"The GMD test program is like T-ball practice when the real world is major league baseball. It’s irresponsible to say the GMD system provides effective protection when it has not been demonstrated to work in conditions expected in a real conflict…"
Reposted by Gregory Kulacki
🎬🍿Are you planning to watch Kathryn Bigelow's new film, A House of Dynamite, this weekend?
Download our free bingo cards to learn more and play along while you watch: act.ucsusa.org/48MjQsO
Download our free bingo cards to learn more and play along while you watch: act.ucsusa.org/48MjQsO
October 24, 2025 at 6:54 PM
🎬🍿Are you planning to watch Kathryn Bigelow's new film, A House of Dynamite, this weekend?
Download our free bingo cards to learn more and play along while you watch: act.ucsusa.org/48MjQsO
Download our free bingo cards to learn more and play along while you watch: act.ucsusa.org/48MjQsO
Reposted by Gregory Kulacki
Our @ucs.org Scoville fellow Sean Manning has this important piece on #HouseofDynamite, laying out exactly how throwing billions or trillions of $$$ at missile defense is not how we solve the nuclear threat. We need solutions that reduce that threat instead. inkstickmedia.com/dont-get-the...
Don't Get the Wrong Takeaway from 'A House of Dynamite'
Director Kathryn Bigelow's new nuclear thriller 'A House of Dynamite' hinges on the failure of the US anti-missile system.
inkstickmedia.com
October 23, 2025 at 2:44 PM
Our @ucs.org Scoville fellow Sean Manning has this important piece on #HouseofDynamite, laying out exactly how throwing billions or trillions of $$$ at missile defense is not how we solve the nuclear threat. We need solutions that reduce that threat instead. inkstickmedia.com/dont-get-the...
"The problem may not be just that Washington may be failing to assure its Korean ally, but that it no longer considers such assurance—and the nonproliferation it is meant to underwrite—necessary."
Washington's neglect of South Korea’s security concerns is a proliferation problem
To deflate Seoul's nuclear ambitions, Washington needs to make its commitment to South Korean security credible and demonstrate that it sees its ally as an equal partner.
thebulletin.org
October 20, 2025 at 4:20 PM
"The problem may not be just that Washington may be failing to assure its Korean ally, but that it no longer considers such assurance—and the nonproliferation it is meant to underwrite—necessary."
"For over a century, Chinese intellectuals grappled with this challenge: how to achieve modernity without losing cultural identity, how to become powerful without abandoning what made China distinctive.
That historical chapter may now be closing. China appears to have found that path”
That historical chapter may now be closing. China appears to have found that path”
The Great Reckoning - The Ideas Letter
The world feels unsettled, as if history itself were changing tempo. The familiar landmarks of the modern age are blurring, slipping away, and the stories we once told ourselves about…
www.theideasletter.org
October 18, 2025 at 12:26 PM
"For over a century, Chinese intellectuals grappled with this challenge: how to achieve modernity without losing cultural identity, how to become powerful without abandoning what made China distinctive.
That historical chapter may now be closing. China appears to have found that path”
That historical chapter may now be closing. China appears to have found that path”
Probably the most important thing you need to know about the risk you’ll be killed if someone launches a nuclear-armed missile in your direction.
A House of Dynamite Explodes the Missile Defense Myth
It is no wonder the interceptors fail in the film. This is an accurate portrayal of what is likely to happen in a crisis.
newrepublic.com
October 15, 2025 at 3:19 PM
Probably the most important thing you need to know about the risk you’ll be killed if someone launches a nuclear-armed missile in your direction.
Reposted by Gregory Kulacki
"Humanity cannot coexist with nuclear weapons forever."
- critical takeaway from my @ucs.org colleague Jenn Knox's must-read piece "Five Things to Know Before Watching A House of Dynamite," the @netflix.com movie premiering in theater's tomorrow:
blog.ucs.org/jknox/five-t...
- critical takeaway from my @ucs.org colleague Jenn Knox's must-read piece "Five Things to Know Before Watching A House of Dynamite," the @netflix.com movie premiering in theater's tomorrow:
blog.ucs.org/jknox/five-t...
Five Things to Know Before Watching A House of Dynamite
The new film A House of Dynamite depicts what happens when a nuclear missile is launched at the United States. The real-world possibility is just as scary.
blog.ucs.org
October 9, 2025 at 8:05 PM
"Humanity cannot coexist with nuclear weapons forever."
- critical takeaway from my @ucs.org colleague Jenn Knox's must-read piece "Five Things to Know Before Watching A House of Dynamite," the @netflix.com movie premiering in theater's tomorrow:
blog.ucs.org/jknox/five-t...
- critical takeaway from my @ucs.org colleague Jenn Knox's must-read piece "Five Things to Know Before Watching A House of Dynamite," the @netflix.com movie premiering in theater's tomorrow:
blog.ucs.org/jknox/five-t...
"Amidst the rich sea life around us, it was hard to imagine some of the largest nuclear weapons in history vaporizing distant parts of this same ocean... What feels abstract today were immediate realities for Bigelow and his crew…"
Seeking a New Moral Compass on Nuclear Weapons Aboard the Golden Rule
A sailboat that symbolized anti-nuclear activism in the late 1950s has been restored as a reminder of the need for arms control.
blog.ucs.org
September 29, 2025 at 2:31 PM
"Amidst the rich sea life around us, it was hard to imagine some of the largest nuclear weapons in history vaporizing distant parts of this same ocean... What feels abstract today were immediate realities for Bigelow and his crew…"
"We live in a rapidly changing geopolitical landscape where the established rules and norms of the post–Cold War era are dissolving quicker than we can devise new ones to take their place. It’s a transition fraught with dangers but also ripe with new possibilities."
How to Make the Next Trump-Kim Meeting a Success
Kim Jong Un could be willing to agree to a nuclear weapons-free zone in Northeast Asia because it would threat North Korea the same as China, Russia, and the United States.
blog.ucs.org
September 23, 2025 at 4:40 PM
"We live in a rapidly changing geopolitical landscape where the established rules and norms of the post–Cold War era are dissolving quicker than we can devise new ones to take their place. It’s a transition fraught with dangers but also ripe with new possibilities."
"They believe large language models, powered by neural networks, may be five to 10 years away from “takeoff”. Zhu insists that these ideas are built on sand."
‘I have to do it’: Why one of the world’s most brilliant AI scientists left the US for China
In 2020, after spending half his life in the US, Song-Chun Zhu took a one-way ticket to China. Now he might hold the key to who wins the global AI race
www.theguardian.com
September 19, 2025 at 2:41 AM
"They believe large language models, powered by neural networks, may be five to 10 years away from “takeoff”. Zhu insists that these ideas are built on sand."
"The Ellisons have also made no secret of their intention to move CBS News to the right. They are negotiating to acquire The Free Press, a heterodox publication co-founded by Bari Weiss that prioritizes criticism of “woke” culture, and put Ms. Weiss in a senior position at CBS News."
Opinion | The Billionaire Trump Supporter Who Will Soon Own the News
www.nytimes.com
September 18, 2025 at 5:24 PM
"The Ellisons have also made no secret of their intention to move CBS News to the right. They are negotiating to acquire The Free Press, a heterodox publication co-founded by Bari Weiss that prioritizes criticism of “woke” culture, and put Ms. Weiss in a senior position at CBS News."
“As the United States revives production capabilities that haven’t been exercised in decades, it seems likely that the scope and cost of its ambitions will prove unwieldy. ...clumsy execution and failure to complete overly ambitious plans may actually undermine perceptions of US deterrence."
It’s Time to Rethink US Nuclear Weapons Manufacturing
There is no technical justification for replacing the entire US nuclear arsenal—but the government is willing to spend more than $2 trillion to do just that.
blog.ucs.org
September 17, 2025 at 2:27 PM
“As the United States revives production capabilities that haven’t been exercised in decades, it seems likely that the scope and cost of its ambitions will prove unwieldy. ...clumsy execution and failure to complete overly ambitious plans may actually undermine perceptions of US deterrence."
