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Carnegie nuclear expert James Acton explains why it would be counterproductive for Israel to attack Iran’s nuclear program

Bulletin, By John Mecklin | October 5, 2024

In the aftermath of Iran’s massive missile attack on Israel this week, it has become clear that Israeli missile defenses are robust. Of the estimated 180 ballistic missiles that Iran launched, only a small percentage evaded Israel’s anti-missile defenses, causing limited damage at or near some Israeli intelligence and military sites and apparently having little impact on Israeli military operations. But the attack marks a major escalation in the Israel-Iran conflict and has led to widespread speculation about when and where Israel will respond. Much of that speculation has centered on the question of whether Israel will attack facilities related to Iran’s nuclear program.

Late this week, I asked James Acton, a physicist and wide-ranging nuclear policy expert who co-directs the Nuclear Policy Program at the Carnegie Endowment for International Peace, for his assessment of the Israel-Iran situation, especially as regards the possibility of an Israeli attack on Iran’s nuclear facilities. His answers follow in a lightly edited and condensed Q&A format.

John Mecklin: I gather you think it would be a bad idea for Israel to attack Iran’s nuclear facilities. Can you explain why for our readers?

James Acton: Sure. If Israel or the United States tries to attack Iran’s nuclear facilities, my belief is that that will harden Iranian resolve to acquire nuclear weapons without eliminating Iran’s capability to do so. Israel would be motivated, in part, to punish Iran for its recent attack on Israel, using that as an opportunity to try and destroy Iran’s nuclear program, so the Israelis didn’t have to worry about it in the future. I think if they decide to attack Iran’s nuclear program, they will find themselves worrying much more about Iran’s nuclear program in the future. We’ll elaborate on this, but an attack would, I believe, simultaneously harden Iranian resolve to acquire nuclear weapons while also not destroying permanently their capability to achieve that goal…………………….

…………..If the Iranian program today comprised a single reactor that had not been turned on, I think you could make a fair argument that it could be in Israel’s interests to attack it. But that’s nothing like what the Iranian program actually looks like…..

……………..But the Iranian program today is based around centrifuges, which are very small and can be manufactured quickly and placed almost anywhere. So even if an Israeli attack destroys Iran’s current centrifuge plants at Fordow and Natanz—and it’s not obvious to me that Iran has the capability to destroy Fordow, which is buried inside a mountain—but even if Israel can destroy Iran’s existing centrifuge plants, Iran is almost certainly going to reconstruct centrifuge facilities………………………………………………………………….

So people tend to say the Israelis can destroy Iran’s nuclear weapons program. Even if that is true in the short term, the question they have to answer is: Then what?

Mecklin: Okay, the second question is: How likely do you think it is that Israel is actually contemplating attacking the nuclear facilities?

Acton: Let me distinguish between two ideas. Are they contemplating doing so? And will they do so?

I think there is an extremely high probability that there is a serious discussion going on right now in the Israeli Security Cabinet about whether to attack Iran’s nuclear facilities. Many Israeli leaders have openly called for that at this juncture. And you know, Netanyahu has been publicly mentioning this possibility on and off for many years now. So I would be staggered if there was not a serious discussion within Israel right now about attacking Iranian nuclear facilities.

Would Israel actually go ahead and do that? I think it would be tough without a lot of US support. And Biden has come out and said unequivocally, no. And doing it without US support would do enormous damage to the US Israeli relationship. And I think the Israelis understand that.

I think the Israelis fully understand that if they attack Iran’s nuclear program, Iran then attacks Israel in a much larger way than we’ve seen before. The Israelis are going to want America’s help in defending against those attacks, and there must be at least some uncertainty in their mind, if they just point blank defy an American president, whether that help would be forthcoming. So for all of those reasons, if the US is being as clear in private as it is in public, I do think it’s substantially less than 50/50 that the Israelis are going to attack Iranian nuclear facilities. I think it’s higher than 10 percent, but it’s not, I think, 50/50. Which I find somewhat reassuring.

………………………..one thing that I feel pretty confident in saying is that if Iran has not yet made a decision to build a nuclear weapon, an Israeli strike makes it much, much more likely that It will make that decision to do so—both for reasons of defending the state and for reasons of domestic politics…….. more https://thebulletin.org/2024/10/carnegie-nuclear-expert-james-acton-explains-why-it-would-be-counterproductive-for-israel-to-attack-irans-nuclear-program/?utm_source=Newsletter&utm_medium=Email&utm_campaign=MondayNewsletter10072024&utm_content=NuclearRisk_NuclearExpert_10062024#post-heading

October 8, 2024 - Posted by Christina Macpherson | Iran, Israel, weapons and war