DUBAI: Iran and the United States began a fourth round of negotiations Sunday over Tehran’s rapidly advancing nuclear program, officials said, just ahead of a visit by President Donald Trump to the Middle East this week.
The round of talks, again happening in the sultanate of Oman, likely will see Oman’s Foreign Minister Badr Al-Busaidi mediating. American officials believe the talks will include both indirect and direct portions, as in previous rounds of negotiations, but like the other rounds in Muscat and Rome, details remain scarce.
The talks seek to limit Iran’s nuclear program in exchange for the lifting of some of the crushing economic sanctions the US has imposed on the Islamic Republic, closing in on half a century of enmity.
Trump has repeatedly threatened to unleash airstrikes targeting Iran’s program if a deal isn’t reached. Iranian officials increasingly warn that they could pursue a nuclear weapon with their stockpile of uranium enriched to near weapons-grade levels. Meanwhile, Israel has threatened to strike Iran’s nuclear facilities on their own if it feels threatened, further complicating tensions in the Mideast already spiked by the Israel-Hamas war in the Gaza Strip.
Iranian state television announced the talks had begun. There was no immediate comment from the US side.

The fourth round comes ahead of Trump’s trip
The talks will again see Iranian Foreign Minister Abbas Araghchi and US Mideast envoy Steve Witkoff lead the negotiations. They have met and spoken face-to-face in the talks, but the majority of the negotiations appear to have been indirect, with Al-Busaidi shuttling messages between the two sides.
Iran has insisted that keeping its ability to enrich uranium is a red line for its theocracy. Witkoff also has muddied the issue by first suggesting in a television interview that Iran could enrich uranium at 3.67 percent, then later saying that all enrichment must stop.
“An enrichment program can never exist in the state of Iran ever again,” Witkoff told the right-wing Breitbart news site in a piece published Friday. “That’s our red line. No enrichment. That means dismantlement, it means no weaponization, and it means that Natanz, Fordow, and Isfahan — those are their three enrichment facilities — have to be dismantled.”
Araghchi, however, warned again that enrichment remains a red line for Iran.
“This is a right of the Iranian people that is not up for negotiation or compromise. Enrichment is one of the achievements and honors of the Iranian nation,” Araghchi said before leaving Tehran. “A heavy price has been paid for this enrichment. The blood of our nuclear scientists has been shed for it. This is absolutely non-negotiable. That has been our clear stance that we have always voiced.”
Iran’s 2015 nuclear deal with world powers capped Tehran’s enrichment at 3.67 percent and reduced its uranium stockpile to 300 kilograms (661 pounds). That level is enough for nuclear power plants, but far below weapons-grade levels of 90 percent.
Since the nuclear deal’s collapse in 2018 with Trump’s unilateral withdrawal of the US from the accord, Iran has abandoned all limits on its program and enriched uranium to up to 60 percent purity — a short, technical step from weapons-grade levels. There have also been a series of attacks at sea and on land in recent years, stemming from the tensions even before the Israel-Hamas war began.