(((James Acton))) Profile picture
Sep 11, 2017 8 tweets 4 min read Read on X
I am highly skeptical of @benrileysmith story that Iran assisted DPRK with *recent* nuclear advances. (1/n)
telegraph.co.uk/news/2017/09/0…
@benrileysmith UK government is looking for evidence of foreign involvement b/c of belief that DPRK couldn't have made progress without outside help. (2/n) Image

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More from @james_acton32

Jun 26
How effective were strikes against Iran?

U.S. and Israeli officials stress how long it would take Iran to rebuild its previous nuclear program.

But there's a MUCH more important issue: How long it would take Iran to get the bomb? For that, a small program would suffice. (1/n)
As in yesterday’s Axios article, these officials stress the damage done to Iran’s major declared facilities.

But the main issue isn't whether the U.S. & Israel severely damaged what they attacked; I'm sure they did. It's what they did NOT attack. (2/n)

axios.com/2025/06/25/ira…Image
I'm sure Israel did indeed destroy "several" centrifuge production lines.

But what about the stockpile of centrifuge components that Iran has ALREADY produced?

Israel has not claimed to have hit them--which suggests Iran could rebuild a new enrichment plant. (3/n) Image
Read 11 tweets
Jun 24
How far has military action set back Iran's nuclear program?

Netanyahu says 2-3 years.

JD Vance says "substantially."

In @politico, I argue that Iran could build the bomb in a year. And it now has much stronger reasons to do so. (1/n) Image
Iran still has its own nuclear triad: highly enriched uranium, centrifuge components, and expertise.

That's right.

A war waged nominally for nonproliferation has left Iran with several bombs worth of un-safeguarded highly enriched uranium. (2/n)

politico.com/news/magazine/…
IAEA DG @rafaelmgrossi has indicated, pretty explicitly, it was removed by Iran to locations unknown before the war began. (3/n)

iaea.org/newscenter/sta…Image
Read 7 tweets
Jun 17
The claim that Iran had 60 days to make a deal is disingenuous since the United States was hardly ready, and did not conduct, an intensive, detailed negotiation. (1/n) Image
For example, there were times when Iran was willing to talk but the United States wasn't (presumably because it needed more time to prepare).

reuters.com/world/middle-e…Image
For some time, the United States seemed to vacillate on whether it would be prepared to sign a deal that allowed any enrichment in Iran. (3/n)

thehill.com/homenews/admin…
Read 5 tweets
Jun 16
🧵The stated goal of Israel’s military campaign is to prevent Iran from acquiring nuclear weapons. With operations ongoing, it's too early to reach a conclusion.

But I can highlight outstanding questions that will determine whether Israel will achieve its nuclear goal. (1/n)
Let's focus on three areas:
👉Fordow
👉Enriched uranium stockpile
👉Centrifuge components

BLUF: As of now, key facilities, material, and equipment are--or are likely--intact.

CAVEAT: The situation is fluid and uncertain. (2/n)
FORDOW is an enrichment plant buried in a mountain. While there are reports of some strikes against the facility, IAEA DG @rafaelmgrossi reports this morning that no damage is visible. (3/n)

iaea.org/newscenter/sta…Image
Read 14 tweets
Sep 25, 2024
🧵Initial thoughts on Russia's new nuclear doctrine, based on a machine translation of Putin's comments. (I have not seen the doctrine yet; my assessment may change when I do).

BLUF: It's not tied as directly to the Ukraine war as others think. (1/n)

kremlin.ru/events/preside…
Here's the key passage (thanks, @ChatGPTapp).

(2/n) Image
@ChatGPTapp As has been reported, Putin is saying he might use nuclear weapons against a non-nuclear weapon state that attacked Russia in concert with a nuclear-weapon state.

This mirror U.S. declaratory policy until 2009 (I think), which contained a similar provision. (3/n)
Read 13 tweets
Aug 5, 2024
This thread is a transparent attempt by Colby to foreclose scrutiny of his behavior around the insurrection on Jan 6, 2021. I want to explain what he did and why it shouldn't be ignored.

(Like all my tweets, these are my personal views.)



(1/n)
My criticism of Colby is nothing to do with his conservative views. We were friends—good friends—for years. We regularly had lunch or dinner. I went to Rio for his wedding. He came to mine. Throughout that time, we disagreed a lot about policy—domestic and foreign—but...

(2/n)
… we discussed those disagreements in a good-faith, productive way. We found common ground on nuclear policy and wrote together. I read part of his book manuscript and he thanked me in his acknowledgments.

(3/n)


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Read 19 tweets

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