Iran is simultaneously setting conditions to build a nuclear weapon while continuing to signal its willingness to resume nuclear negotiations with the West. Russia has increased nuclear cooperation with Iran in recent months in line with “[Iranian] ambitions to obtain atomic weapons,” according to unspecified Western officials speaking to Bloomberg on September 14.[9] It is unclear whether the Western officials meant that Iran has decided to produce a nuclear weapon or that Iran seeks to develop the capability to develop a nuclear weapon but has not actually decided to produce one. The Western officials stated that US President Joe Biden and UK Prime Minister Keir Starmer discussed on September 13 how Russia may be sharing unspecified nuclear technology and secrets with Iran in return for Iran providing Russia with ballistic missiles.[10] Iran recently delivered over 200 Fateh-360 short-range ballistic missiles to Russia on September 4.[11] US Secretary of State Antony Blinken similarly stated on September 10 that “Russia is sharing technology that Iran seeks . . . including on nuclear issues.”[12] Russian President Vladimir Putin stated that Iran and Russia have increased “peaceful nuclear cooperation” during a meeting with Iranian Supreme National Security Council Secretary Ali Akbar Ahmadian in St. Petersburg, Russia, on September 12. [13]
https://www.understandingwar.org/backgrounder/iran-update-september-16-2024
Iran Update, September 17, 2024
A Washington-based think tank reported that Iran has in recent months increased its operation at two nuclear sites that were previously used for high explosive testing.[34] The report noted that this increased activity—paired with the growing Iranian stockpile of highly enriched uranium—could shorten the Iranian breakout timeline for producing a nuclear weapon to about one week.[35] The Institute for Science and International Security, citing unspecified Western intelligence sources, reported specifically that Iran has ”reactivated and accelerated” activities at the Sanjarian and Golab Dareh nuclear sites in Tehran Province in recent months.[36] The institute also observed through satellite imagery an increase in human traffic, landscaping, and physical security at the Sanjarian site.[37] The Sanjarian and Golab Dareh sites were both involved in Iran’s pre-2003 nuclear weapons program, according to documents retrieved by Israel in a clandestine operation in Iran in 2018.[38]
This report comes as Iran has taken several other measures to expand its nuclear program in recent months. Iran has increased its stockpile of weapons-grade uranium, installed new cascades of advanced centrifuges, and conducted metallurgical testing and computer simulations that could support the production of a nuclear weapon.[39] Russia has separately begun giving Iran unspecified nuclear assistance in exchange for Iran sending ballistic missiles to support the Russian invasion of Ukraine.[40]
https://www.understandingwar.org/backgrounder/iran-update-september-17-2024