(((James Acton))) Profile picture
Jan 26, 2022 11 tweets 6 min read Read on X
According to @WSJ, the U.S. has given Russia a list of arms control proposals that could be part of a way to defuse the Ukraine crisis.

Could this work? How, specifically, could arms control help?

A thread. (1/n)

wsj.com/articles/u-s-d…
Let's acknowledge from the outset that for arms control to help, Putin has to want to defuse the crisis. I have no idea whether he does.

But *if* he does, I think arms control can help to address various Russian *and* U.S./Russian/NATO security concerns. (2/n)
It's not clear from the @wsj report exactly what was in the U.S. proposal. The WSJ mentions the Biden admin has given consideration to a reciprocal scale-back of military exercises and new rules governing the back sea.

But I'll focus here on three proposals.

(3/n)
First, Putin has long floated the idea of a moratorium of INF-type missiles in Europe. The proposal includes unspecified verification and covers the 9M729 (even though Russia continues to deny, unpersuasively IMO, that it violated the INF Treaty).

armscontrol.org/act/2020-11/ne…
(4/n)
U.S./NATO officials previously dismissed this idea because of the mobility of the 9M729. Plus verification would not be easy. But, under currently circumstances, the U.S. government is rightly interested in the concept again; it'd have benefits for both sides. (5/n)
Second, Putin tied his proposal to inspections of Aegis Ashore facilities in Europe. Significantly, Warsaw is apparently open to this idea (on the basis of reciprocity). (6/n)
Such inspections could demonstrate that Aegis Ashore launchers were not loaded with cruise missiles and that their SM-3 interceptors could not catch Russian ICBMs.

Recently, @macdonald_td, @pranayrvaddi, and I published a detailed proposal. (7/n)

carnegieendowment.org/files/Acton_et…
Finally, U.S. officials are reportedly concerned that Russia might move nonstrategic nuclear weapons toward NATO and apparently discussed this general concern in the recent Geneva talks. (8/n)

nytimes.com/2022/01/16/wor…
A second Acton/MacDonald/Vaddi proposal for inspections of *empty* actual or suspected warhead storage facilities to demonstrate the *absence* of nuclear warheads could be useful here. (9/n)

carnegieendowment.org/files/Acton_et…
For sure, it's difficult to be optimistic! As I say, Putin may not be looking for a way out and, even if he is, his demands may go far beyond these kinds of technical measures.
(10/n)
That said, be careful about taking certain Russian statements at face value.

*IF* Russia is open to arms control approaches--and again, it may not be!--officials would play down that interest to try and drive harder bargain in negotiations. (11/11)

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More from @james_acton32

Jul 28
On Friday, I argued in @ForeignPolicy that Trump admin claims it had set Iran back by "years" were true but disingenuous.

The same day, the normally excellent @IgnatiusPost amplified the misleading U.S. and Israeli narratives.

Let's take a look...

(Links below). (1/n)
First off, here are links for my @ForeignPolicy and @IgnatiusPost's @washingtonpost piece.

foreignpolicy.com/2025/07/25/ira…

washingtonpost.com/opinions/2025/…

(2/n)
@ForeignPolicy @IgnatiusPost @washingtonpost Ignatius's oped is written as if it's a news story. The "news" in this case is that--SURPRISE!--an Israeli source backed up claims by the Israeli government! (3/n) Image
Read 12 tweets
Jul 21
🧵How much damage was done to Iran's nuclear program?

An analysis of Friday's reporting of the U.S. government assessment. I'll focus on the @nytimes, which was clearer than the earlier but confused @NBCNews story. (1/n) Image
U.S. officials continue to argue that it would take Iran years to rebuild the facilities that were hit. That seems right to me.

But a key question is this: How long would it take Iran to build the bomb? (2/n) Image
Image
Attempts to play down the survival of most or all of Iran's HEU are comical.

It may be true that "only" the HEU at Isfahan is accessible--but that's almost all of it! (3/n) Image
Read 13 tweets
Jul 9
🧵Introducing optimal deterrence.

Here's my proposed U.S. nuclear strategy for managing escalation, arms racing, and proliferation with two nuclear peers, published through @CFR_org.

Health warning: If you like counterforce, take a DEEP breath before reading on. (1/n) Image
The U.S. faces a security environment that's bad and getting worse. There's an emerging bipartisan consensus that, in response, the U.S. needs more nukes. The justification stems from the current policy of "counterforce" targeting. (2/n)

cfr.org/report/optimal…Image
The logic of counterforce targeting is merciless, however, and will catalyze an expensive, tension-generating, and futile three-ways arms race in which the United States will fail to achieve the nuclear superiority it seeks. (3/n) Image
Read 10 tweets
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

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