Our Publications

Policy Briefs
October 30, 2023
On October 18th, most of the remaining U.N. Security Council restrictions on Iran’s nuclear program expired with little fanfare. But the three European parties to the JCPOA decided not to lift proliferation-related sanctions on Iran as stipulated by the deal. Now, a return to pre-JCPOA sanctions coordination among the U.S., Europe, and other...
September 29, 2023
This month's newsletter features updates to a report estimating how quickly Iran could enrich enough uranium to fuel a small nuclear arsenal as well as a table tracking Iran's centrifuge models and their deployment at declared uranium enrichment sites. Both resources reflect new data from the most recent International Atomic Energy Agency (IAEA)...
Weapon Program Background Report
September 25, 2023
Iran operates dozens of facilities across the nuclear fuel cycle. This table lists Iran’s known and alleged nuclear sites and their purpose, location, and operating status.
August 30, 2023
This month's newsletter features an update to a table that details Iran's missile arsenal, the largest in the Middle East. Since the last update, Iran has unveiled the solid-fueled "hypersonic" Fattah missile as well as a new variant of the liquid-fueled Khorramshahr, Tehran's longest-ranged missile.
July 26, 2023
This month’s newsletter features a look at a recent U.S. indictment of Chinese national Xiangjiang Qiao. Qiao is an associate of Li Fang Wei (Karl Lee), a major supplier of critical components to Iran’s missile program from 2006 until at least 2014.
International Enforcement Actions
July 25, 2023
Rumor has it that the notorious proliferator Karl Lee may be in prison, but open-source evidence suggests that his network is still active.
June 27, 2023
This month’s newsletter features an analysis of recent trends in U.S. and EU sanctions against Iran. Whereas in the past these sanctions have focused heavily on Iran’s nuclear and ballistic missile programs, over the past two years the focus has shifted dramatically toward targeting human rights violators and drone-related entities.
Articles and Reports
June 26, 2023
In the past, U.S. and European sanctions against Iran have focused heavily on its nuclear and ballistic missile programs. But over the last two years, that focus appears to have shifted.
May 25, 2023
This month's newsletter features a new episode of Iran Watch Listen, a podcast by the Wisconsin Project on Nuclear Arms Control. We sat down with Dr. Bruce Goodwin to discuss the process of building nuclear weapons from a technical perspective, and explored the experience Iran has with some of the key steps of the weaponization process.
Interviews and Podcasts
May 17, 2023
Once Iran has the fuel, what else would it need to build a nuclear weapon? To find out, we spoke to Dr. Bruce Goodwin, an expert on nuclear weapons design and testing.