Corey Hinderstein

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The right response is not for the United States to be the first to blow up (pun intended) the moratorium that has held since the 1990s, but seek clarification on what they are doing with reciprocal insight into the US program so we don't end up in an escalation based on fear and accusations. 11/11

Adherence to and Compliance with Arms Control, Nonproliferation, and Disarmament Agreements and Commitments - United States Department of State Pursuant to statute (22 U.S.C. § 2593a), the Department of State prepares a report providing a detailed assessment of the adherence of the United States and other nations to obligations undertaken in ...

When these happen, the world knows. What if Russia and China were doing small scale experiments, like the US does in NV, but they were going a little critical? It is true that we might not know, and the State Department has raised these questions in the past. www.state.gov/adherence-to... 10/11

The International Monitoring System The International Monitoring System (IMS) is a unique global network that, when complete, will consist of 321 monitoring stations and 16 laboratories hosted by 89 countries around the globe.

The only country to do underground nuclear tests in recent years is North Korea, last in 2017. We know this because the CTBTO International Monitoring System can detect any full scale nuclear weapons tests, anywhere in the world and has proven it. www.ctbto.org/our-work/int... 9/11

Trump said that Russia, China, North Korea, Pakistan are all "testing" and went on to say, "You don't necessarily know where they're testing," and "They [test] underground where people don't know exactly what's happening with the test." Here, he is a little right and a lot wrong. 8/11

China is also testing nuclear delivery vehicles. Spoiler alert: so does the US, including a planned Sentinel ICBM flight test in 2026. When Trump said on 60 Minutes, "I'm saying that we're going to test nuclear weapons like other countries do." This would indicate status quo. 7/11

Putin Announces Test of Tsunami-Making Nuclear Weapon

Trump also said, "Other countries are testing. We're the only country that doesn't test" Well, it depends what he means by testing, and this interview did little to clear up the confusion. Russia last week "tested" two new nuclear delivery vehicles (www.nytimes.com/2025/10/29/w...) 6/11

...the fastest measured supercomputer in the world, the DAHRT and Z machines, and more. More includes the PULSE facility at Nevada where we combine nuclear material and high explosives to study nuclear weapons performance WITHOUT creating a chain reaction, consistent with our int'l commitments. 5/11

YouTube video by Lawrence Livermore National Laboratory What is fusion ignition?

But the main reason is because we have invested billions of dollars in tools and experimental facilities to understand how nuclear weapons work. These facilities include the National Ignition Facility (www.youtube.com/watch?v=6Eh2.... 4/11

Why is that? Because we have the data from more than 1000 nuclear tests (for comparison, USSR/Russia did 715, China <50, North Korea has done 6; see www.armscontrol.org/factsheets/n... for more). 3/11

One answer to the question, "So why do we need to test our nuclear weapons?" was "Well, because you have to see how they work." The good news is that we know more about how nuclear weapons work now than we ever did in the era of nuclear testing. 2/11

President Trump's interview on 60 Minutes did very little to clarify his stance on the United States resuming full-scale nuclear tests for the first time in more than three decades. Let's look at some of his statements. 1/11

Trump says he wants to resume nuclear testing. Here's what that would mean The U.S. has not conducted a nuclear test in over 30 years. Experts say doing one now could make America less safe.

Resuming U.S. nuclear testing, as President Trump has suggested, “would do more to benefit our adversaries than the United States," says @coreyah.bsky.social on @npr.org.

More from Corey on why: www.npr.org/2025/10/30/n...

Trump says he wants to resume nuclear testing. Here's what that would mean The U.S. has not conducted a nuclear test in over 30 years. Experts say doing one now could make America less safe.

NEW: Here's the basics of what a return to nuclear testing would look like for the United States.

www.npr.org/2025/10/30/n...

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Gee, I don’t know, Linda. This could really have helped David and Moira.

China should not fuel an arms race, says a close watcher of its nuclear policy Its interests would be better served if it led on crafting nuclear rules, argues Tong Zhao

Beijing’s stunning display of nuclear power at its recent military parade is striking. In @economist.com, I explain why China should resist fueling arms races and instead champion a rules-based nuclear order.
www.economist.com/by-invitatio...

As irrationally hopeful as ever!

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Do you remember? The very first day of Metstember. Let’s go @mets.com!

I think the langauge could have been more precise.

Happy to help decode. The key words are “has helped eliminate weapons-usable nuclear material.” NNSA will have partnered to eliminate nuclear material from 49 counties+Taiwan, but that is not the same as a full country clean-out.

Shorter...

My point is that these are investments that are supposed to protect us on bad day, when things are unstable, and when we need tools and processes urgently. It is shortsighted to think we can protect the US and our allies with offensive weapons alone. 5/5

And what if we fear that material is out of national control and crossing borders? Sorry, those working with ~100 countries to improve detection at ports and borders are being cut another 20%. 4/5

Not to mention the office that supports international inspectors on the ground in Iran providing the world with first-hand information, is cut by another $6 million, after a reduction already in 2025. These experts also support safe expansion of nuclear energy globally. 3/5

Meet the Mobile Packaging capability: One way NNSA supports nuclear material removals anywhere in the world NNSA is responsible for removing and/or securing high-risk radioactive materials around the world that pose a potential threat. To support that mission, it developed mobile facilities to process and s...

The Mobile Packaging Program is the cavalry we would need. Very unfortunate that the office that manages this is slashed by more than $53 million in the president's 2026 budget request. 2/5 www.energy.gov/nnsa/article...

Don't forget that foundational investments in the #NNSA's nonproliferation capabilities mean we have off-the-shelf tools for out-of-the-ordinary situations. With at least 400 kgs of enriched uranium in the wind, what would a regime collapse mean for global security? 1/5

Great discussion @pranayrvaddi.bsky.social and @ebrewer.bsky.social. Thank you for your attention to this matter!

Great thread from James.

This is exactly right. “One and done” is not obvious here and not fully in either side’s control.

Retired Lt. Gen. warns any U.S. operation against Iran’s nuclear program comes with heavy risks President Trump announced he will make a decision on whether the U.S. will take action against Iran’s nuclear program within the next two weeks. Vice President for Studies at the Carnegie Endowment fo...

President Trump says he’ll decide on if the U.S. will strike Iran’s nuclear program in the next two weeks. VP for Studies at the Carnegie Endowment for International Peace @coreyah.bsky.social and MSNBC military analyst Ret. Lt. Gen. Stephen Twitty discuss.

www.msnbc.com/weekends-wit...

I’m very worried about the plan for NNSA’s nonpro funding and share why here. Bad for security and bad for deterrence!