That the talks have progressed to a fourth meeting suggests, at this point, that the public crossing of these Iranian red lines may not be being repeated in the private meetings. Iran’s Foreign Minister hinted at that possibility when he identified one of the difficulties in the negotiations as being “contradictions both inside and outside the negotiating room.” Supporting this possibility, when Trump introduced Iran’s support of regional proxies into the discussion, Araghchi called the remark, not unproductive or unhelpful, but “deceitful.”

And Araghchi may know. Barak Ravid of Axios has now reported that, during the fourth round of talks, the United States presented Iran with a written proposal. The report says that, during the third round, Araghchi gave Trump’s special envoy Steve Witkoff a document with Iran’s proposals for a deal. The U.S. studied it and returned it to Iran with “questions and requests for clarifications.” Iran replied, the U.S. prepared a new proposal, and then presented it to Araghchi who has now brought it back to Tehran for consultations with Supreme Leader Ali Khamenei and President Masoud Pezeshkian. How far down the path to a settlement the proposal is is unknown. Araghchi said future negotiations now become more difficult. But he said that “despite the difficulty and frankness of the talks, very useful discussions were held.” He then said, “We can now say that both sides have a better understanding of each other’s positions.”

This major breakthrough may have been facilitated by another recent development: a subtle change in tone by Trump. Following a flurry of American threats, the fourth round of talks was postponed. Iranian officials said that [d]epending on the U.S. approach, the date of the next round of talks will be announced.” …

Aside from the implications for the nuclear negotiations, this level of trust between Iran, Saudi Arabia, and the UAE was unthinkable only a very short time ago and testifies to the changes going on in the region and in the evolving Iran-Saudi Arabia relationship. That Iran would trust Saudi Arabia with access to its nuclear technology indicates that a region changing shift in the relationship is underway. As Annelle Sheline, research fellow in the Middle East program at the Quincy Institute, told me:

“The Iranians’ willingness to join a consortium with Saudi Arabia and the UAE to develop civilian nuclear energy demonstrates significantly improved relations between these countries. This sends a strong signal that Tehran as well as Riyadh and Abu Dhabi would prefer to prioritize cooperation over conflict.”

She said that all three countries have growing motivation for peace in the region. Crown Prince Mohammed bin Salman needs to avoid violent conflict to encourage the foreign investment and tourism needed to fuel his planned economic diversification. Mohammed bin Zayed needs economic security in the face of competition from Saudi Arabia to be a regional hub. Iran needs to encourage peace in the region because of the recent weakening of its own strategic position in the region. Saudi Arabia and Iran have recently been moving towards enhanced friendship both bilaterally and through multinational organizations.