20 October 2024

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

John Mecklin

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.

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