The U.S. proposed that Iran accept a 20-year moratorium on uranium enrichment during negotiations in Islamabad over the weekend, according to a U.S. official and a source with knowledge.
- The Iranians countered with a shorter "single digit" period, according to the sources.
Why it matters: The differences over Iran's nuclear program — and in particular, whether Tehran will agree not to enrich uranium and to give up its existing stockpile — were the main sticking point that prevented a deal, the sources say.
Driving the news: Pakistani, Egyptian and Turkish mediators are now trying to bridge the remaining gaps and reach a deal to end the war before the ceasefire ends on April 21.
- Meanwhile, President Trump announced a blockade on Iran as part of the efforts to increase his leverage in the talks.
- "There is continued engagement between the U.S. and Iran and forward motion on trying to get to an agreement," a U.S. official said.
Behind the scenes: The U.S. demand for a moratorium on uranium enrichment was a critical issue in the marathon talks over the weekend. "The United States suggested 20 years at a minimum with all kinds of other restrictions," a source familiar said.
- The U.S. also asked Iran to remove all highly enriched uranium from the country. The Iranians said they would agreed to a "monitored process of down-blending" it instead, according to the two sources.
- While no agreement has been reached, the Iranians thought they were close to an initial agreement by Sunday morning and were caught off guard by Vice President Vance's press conference. The VP gave no indication a deal was close, blamed the Iranians, and announced the U.S. delegation was leaving Islamabad.
- "The Iranians were pissed off about that press conference," a source with knowledge said.
What they're saying: An Iranian member of parliament who was part of the Iranian negotiating team, Seyyed Mahmoud Nabavian, said on Monday that the two U.S. demands on the nuclear issue were the reason no deal was reached.
- Israeli Prime Minister Benjamin Netanyahu said Monday that Vance told him in a phone call on his way back to Washington that the main sticking point was removing all enriched material from Iran and ensuring no enrichment "in the coming years, and that could be in decades."
- The White House didn't immediately respond to a request for comment.
What to watch: Pakistani Prime Minister Shehbaz Sharif said on Monday that the mediators were working to resolve the remaining differences between the U.S. and Iran.
- Egyptian Foreign Minister Badr Abdelatty, who is also playing a key role in the mediation efforts, is expected to visit Washington this week and meet Secretary of State Marco Rubio and other senior officials.
What they're saying: Turkish Foreign Minister Haqan Fidan and intelligence chief Ibrahim Kalin are also involved in trying to bridge the gaps.
- Fidan told Anadolu news agency that "initial positions are always somewhat maximalist. Later, the parties try to find common ground with the support of mediators. As long as they have the intention to reach, maintain, and permanently achieve a ceasefire. What I see is that both sides are sincere about the ceasefire."
- Fidan said he thinks the Iranians will evaluate the U.S. proposal and give their response in the coming days. He said an extension of 45-60 days of ceasefire could be considered to allow negotiations to continue.
- "If the nuclear issue becomes an 'all or nothing' situation, especially regarding enrichment, I think we may encounter a serious obstacle. We will try to overcome this with the support of some mediators and other countries," he said.
