Matthew Bunn's Avatar

Matthew Bunn

@matthew-bunn

Father, husband, citizen, professor, focusing mainly on nuclear weapons and nuclear energy issues. Faculty lead for Harvard's Managing the Atom project: www.belfercenter.org/programs/managing-atom My website: matthewbunn.scholars.harvard.edu

677
Followers
164
Following
471
Posts
23.02.2025
Joined
Posts Following

Latest posts by Matthew Bunn @matthew-bunn

Preview
Facts and physics still matter: a response to Wilson’s historiography Harvard University historian Benjamin Wilson's piece in the Bulletin on Hans Bethe and Richard Garwin fails not because his historiography is provocative, but because his understanding of…

The legacies of physicists Hans Bethe and Richard Garwin are "important to issues of nuclear war and peace, to history, and to the Bulletin readership," writes Herbert Lin, a senior research scholar and research fellow at Stanford University.

06.03.2026 22:01 👍 6 🔁 4 💬 0 📌 0

This thread as a single page: skywriter.blue/@profsaunder...

06.03.2026 16:34 👍 46 🔁 16 💬 2 📌 1
Preview
The Mirage of a New Middle East War with Iran won’t reshape the region the way America wants.

My new piece in @foreignaffairs.com focusing on the day after is free access right now if you want to check out.

06.03.2026 15:57 👍 12 🔁 6 💬 0 📌 0
A graph of the cumulative number of grants awarded by NIH during the course of each year, for 2020-2026, showing that awards so far in 2026 are a small fraction of what they were in all previous years -- because the White House is slowing down spending the funds.

A graph of the cumulative number of grants awarded by NIH during the course of each year, for 2020-2026, showing that awards so far in 2026 are a small fraction of what they were in all previous years -- because the White House is slowing down spending the funds.

Even after Congress passed science budgets and Trump signed them into law, the White House is delaying spending the money -- further damaging the U.S. S&T enterprise, slowing advances in health, and handing the tech lead to China.
www.nature.com/articles/d41...

06.03.2026 15:25 👍 2 🔁 0 💬 0 📌 0
Post image

“Unconditional surrender” was the Allies’ demand in WWII. They backed it up by occupying Germany, Italy and Japan.

Is Trump prepared to send hundreds of thousands of troops to occupy Iran, a nation of 93 million people, and to risk the resulting casualties? If not, this is simply bluster.

06.03.2026 15:13 👍 446 🔁 121 💬 58 📌 10
Preview
Why Wars Are Easy to Start and Hard to End Misperception, sunk costs, escalation, and internationalization all make conflicts last longer than planned.

Re-upping for no particular reason: foreignpolicy.com/2022/08/29/w...

06.03.2026 12:44 👍 9 🔁 5 💬 0 📌 0
Preview
Stand Up for Science 2026 - Boston, MA Boston is joining the Stand Up for Science national day of action! Join us at the Parkman Bandstand for speakers, chants, and actions.

Oppose the Trump team's efforts to gut the science engine of innovation that has improved American (and global) lives and contributed so much to the American economy and American security. I'll be there tomorrow!

www.eventbrite.com/e/stand-up-f...?

06.03.2026 13:18 👍 4 🔁 2 💬 0 📌 0

Casey Means still doesn’t have the votes. Keep the letters coming.

04.03.2026 13:06 👍 176 🔁 79 💬 1 📌 0

Disclaimer: Cartoon's author is not Mark Rutte.

06.03.2026 09:48 👍 1 🔁 1 💬 0 📌 0
Video thumbnail

This is a real video from the official White House account on a war that is currently killing people. I don’t know how the US is going to come back from this.
The post was “JUSTICE THE AMERICAN WAY. 🇺🇸 🔥”

06.03.2026 08:22 👍 3092 🔁 1081 💬 651 📌 1166

The concerning background:

-CEO of the Thiel Foundation
-Managing Director at Thiel Capital
-Managing Director of Clarium Capital (hedge fund led by Peter Thiel)
-Managing Director of Mithril Capital Management (VC fund founded by Peter Thiel that funds Palantir)
-Co-founder of the Thiel Fellowship

03.03.2026 17:32 👍 410 🔁 256 💬 21 📌 10
Preview
CLM Insights Interview with Fiona S. Cunningham | China Leadership Monitor Fiona S. Cunningham. Under the Nuclear Shadow: China’s Information-Age Weapons in International Security (Princeton Studies in International History and Politics). Princeton University Press, January…

China Leadership Monitor interviews @fiona-cunningham.bsky.social, author of Under the Nuclear Shadow: China’s Information-Age Weapons in International Security. Check it out here:

05.03.2026 20:25 👍 5 🔁 2 💬 0 📌 0
Video thumbnail

💭 #Iran at War: The Russian Angle

@nicolegrajewski.bsky.social explains why the Russia–Iran relationship is not an alliance.

It is a partnership shaped by shared interests, regime security concerns, and significant limits rooted in historical mistrust.

Full conversation linked below ⬇️

05.03.2026 14:51 👍 7 🔁 2 💬 1 📌 0

Just shocking to launch a military operation like this, justified by the nuclear danger, and not have a plan for dealing with the most urgent part of the nuclear danger.

05.03.2026 19:02 👍 0 🔁 0 💬 0 📌 0

Multiple studies by the U.S. government and other governments have concluded the threat is not just states -- it IS plausible that a sophisticated terrorist group could make a crude nuclear bomb if it got access to HEU. In this case, they'd have to convert it from UF6 to metal.

05.03.2026 19:02 👍 0 🔁 0 💬 1 📌 0

You could easily imagine someone managing that material thinking: "I need to get myself and my family out, this could be my golden ticket." Or, if the state collapses or there's civil war, who knows who might get it.

05.03.2026 19:02 👍 0 🔁 0 💬 1 📌 0

This is really an important statement from Rep. Foster, confirming that even at the classified level, the administration has no plan at all to secure Iran's several bombs' worth of HEU. That's a huge danger to U.S. security -- from Iran, or from "loose nukes."

05.03.2026 19:02 👍 4 🔁 4 💬 1 📌 0
An annotated color map of the world designating which states are and are not members of the Treaty on the Non-Proliferation of Nuclear Weapons, which ones have nuclear weapons (the United States, Russia, the United Kingdom, France, China, India, Israel, Pakistan, and North Korea) and which don’t (everyone else), along with a few key details about some of those states.

An annotated color map of the world designating which states are and are not members of the Treaty on the Non-Proliferation of Nuclear Weapons, which ones have nuclear weapons (the United States, Russia, the United Kingdom, France, China, India, Israel, Pakistan, and North Korea) and which don’t (everyone else), along with a few key details about some of those states.

Today in 1970, the Treaty on the Non-Proliferation of Nuclear Weapons (aka the NPT)—which opened for signature on July 1, 1968—entered into force. Only four states have never been a party to it: India, Israel, Pakistan, and South Sudan. North Korea acceded in 1985 and withdrew in 2003.

05.03.2026 15:32 👍 18 🔁 7 💬 1 📌 0
Post image

FT comments section this morning - saying what everyone else is thinking, right?

05.03.2026 07:15 👍 17073 🔁 5952 💬 512 📌 493

A special military operation, if you will.

04.03.2026 16:36 👍 179 🔁 38 💬 11 📌 2
Preview
Opinion | Of Course Trump Bombed Iran

“If the United States wants to stop plunging into Middle East wars, it needs to value its own interests more than it hates its old enemies.” Rob Malley in @nytopinion.nytimes.com www.nytimes.com/2026/03/05/o...

05.03.2026 14:26 👍 73 🔁 19 💬 5 📌 2
Video thumbnail

Last night, I left the classified briefing on Trump's war in Iran and heard nothing about a plan to meaningfully address Iran's nuclear capabilities.

Iran's stockpile of highly enriched uranium should be the administration's primary focus. That is clearly not the case.

04.03.2026 14:57 👍 50 🔁 27 💬 5 📌 5
Preview
Opinion | Your Job May Already Be in Jeopardy

“More recently, the Microsoft AI chief executive, Mustafa Suleyman, stated that most professional tasks will be fully automated in the next 12 to 18 months.” Yikes.

www.nytimes.com/2026/03/05/o...

05.03.2026 14:09 👍 1 🔁 0 💬 0 📌 0

Why just having "a human in the loop" is not good enough.

05.03.2026 09:11 👍 15 🔁 3 💬 0 📌 0
Preview
Pentagon eyes Ukrainian interceptor drones to counter Iran Kyiv has pioneered cheap and mass-produced machines to battle Russian versions of the Shahed attack drone

No surprise there. I really hope that Ukraine can get something out of this for its own defence.

giftarticle.ft.com/giftarticle/...
Pentagon eyes Ukrainian interceptor drones to counter Iran

05.03.2026 09:18 👍 280 🔁 63 💬 13 📌 7
Screenshot of an X post by Senator Tom Cotton saying Iran has been an imminent threat to the United States for 47 years and that the president was right to act. Below is a Fox News segment with Cotton speaking while footage labeled “U.S. Central Command – Unclassified” shows a strike.

Screenshot of an X post by Senator Tom Cotton saying Iran has been an imminent threat to the United States for 47 years and that the president was right to act. Below is a Fox News segment with Cotton speaking while footage labeled “U.S. Central Command – Unclassified” shows a strike.

“Imminent.” You keep using that word. I do not think it means what you think it means.

04.03.2026 21:30 👍 12354 🔁 2113 💬 948 📌 191
Preview
The Illuminatus! Trilogy - Wikipedia

My lord, are you quoting Illuminatus? You're the wrong generation for that one, I would have thought... The Dealey Lama! Driving through Loch Ness in a yellow submarine!
en.wikipedia.org/wiki/The_Ill...

04.03.2026 23:46 👍 5 🔁 1 💬 2 📌 0

What he fails to understand is that the offer of an elite education is often the only thing that keeps good people to continue serving. Without this you will not retain enough older GOFOs and leadership degrades

04.03.2026 23:40 👍 1 🔁 1 💬 0 📌 0
Preview
After Hegseth Cut Ties, Harvard Offers Workarounds for Troops

Jeremy Weinstein, dean of the Harvard Kennedy School, gives admitted members of the miltary the option to defer for several years, but also arranges expedited review of their application at other schools if they don't want to postpone, in response to Hegseth's foolish Harvard cutoff.

04.03.2026 23:25 👍 14 🔁 5 💬 0 📌 1