What’s happened: US Secretary of State Rubio said yesterday that Iran could be allowed a civil nuclear programme but emphasised that it must refrain from enriching uranium.
- In an interview on Bari Weiss’s podcast Rubio said, “If Iran wants a civil nuclear programme, they can have one just like many other countries in the world have one. That is, they import enriched material.”
- Rubio also reiterated President Trump’s longstanding position that diplomacy was preferable to military action, while praising Special Envoy Witkoff’s efforts in negotiating with Iran.
- With US-Iranian talks ongoing, President Trump and Prime Minister Netanyahu spoke by phone on Tuesday, with Trump later saying that they were “on the same side of every issue.”
- The call follows a second round of talks between the US and Iran hosted at the Omani Embassy in Rome where the Iranian Foreign Minister, Abbas Araghchi, said that he and Witkoff had “managed to reach a better understanding on a series of principles and goals.”
- Witkoff had previously stated that the US would accept a cap on Iranian nuclear enrichment. However, a day later, he U-turned and asserted that all enrichment would have to end.
- In parallel, Mohammed Eslami, the Head of Iran’s Atomic Energy Organisation, has confirmed that Iran has begun fortifying tunnel systems linked to its nuclear project, explaining that “efforts are ongoing…[to] expand protective facilities.”
Context: While the US seemingly open to Iran developing and maintaining a civil nuclear energy programme if it refrains from enriching its own uranium, Israel is taking a less compromising position.
- In parallel to the negotiations Iranian Supreme Leader Khamenei laid out his country’s red lines for negotiations that include:
- Not dismantling any of their centrifuges.
- Not lowering uranium enrichment below 3.67% (the level agreed in the JCPOA 2015 nuclear agreement).
- Not ceasing missile programmes (that currently remain outside the scope of the JCPOA).
- Guarantees that the US will not withdraw from a future deal (as President Trump did in 2018).
- Prime Minister Netanyahu has said that the only diplomatic solution to the nuclear crisis with Iran is the ‘Libya option’ in which all existing infrastructure in Iran will be dismantled or is shipped out of the country.
- A recent New York Times article claimed Trump had blocked an Israeli military attack on nuclear facilities, with the administration wanting to give more time for diplomacy.
- In the context of these military threats, evidence that Tehran has begun fortifying tunnel systems linked to its main nuclear facility – that could potentially store highly enriched uranium, and other undeclared nuclear materials, or advanced centrifuges – is pertinent.
- The evidence was taken from commercial satellite imagery taken over Iran at the end of March 2025, and published in a report by the Institute for Science and International Security. The Institute’s President, David Albright, has suggested that the new tunnels could become operational relatively soon, and that it was highly unlikely that UN nuclear inspectors would be granted access to them.
- Israel has long attempted to undermine and weaken Iran’s nuclear programme, primarily through covert and deniable means including cyber-attacks, sabotaging facilities, and targeted assassinations of nuclear scientists and officials.
- All these efforts are assumed to be paused while Israel closely follows US efforts to reach a diplomatic solution.
- Although not party to the talks, Israel will be hoping that Netanyahu’s personal ties – along with those of Minister Dermer – will be able to influence the US position.
Looking ahead: A third round of US-Iran nuclear talks will take place on Saturday, this time returning to Muscat in Oman.
- This upcoming round has been described as both “technical” and “high-level”, and is understood to focus on agreeing a framework for a potential nuclear deal which would not be dissimilar to the JCPOA.


