Special Envoy Steve Witkoff arrived in Muscat on Sunday morning aboard a commercial Emirates flight from Dubai, two senior administration officials confirmed to Axios in a Sunday afternoon report, with the rest of the small American delegation arriving over the course of the weekend through similarly low-profile commercial routings designed to avoid the kind of attention that the Islamabad talks attracted to themselves. The American team includes a small staff complement drawn from the National Security Council and the State Department's Iran desk, but does not include Jared Kushner, whose absence from this round has been characterized by administration sources as a deliberate framing of the Muscat track as a Witkoff-led negotiation rather than a presidential one. Iranian Foreign Minister Abbas Araghchi has been in residence at the Iranian ambassador's compound in Muscat since the Islamabad talks collapsed eight days ago, working through preparatory exchanges with the Omani foreign ministry that have now produced the substantive opening of the third round.

The Omani protocol that governs these negotiations operates on a single rule that distinguishes Muscat from every other available diplomatic venue, which is that no public confirmation of the talks occurs until both sides agree to confirm. Arrivals are not announced to the press, joint statements are not issued, no press is permitted at the venue, and the diplomats from both delegations occupy guesthouses on the Royal Palace grounds while Omani foreign ministry officials shuttle between them carrying messages, draft language, and counterproposals. This structural opacity was the architecture of the 2013 talks that produced the framework agreement underlying the Joint Comprehensive Plan of Action, it was the architecture of the 2018 talks that did not produce a follow-on agreement after the first Trump administration withdrew from the JCPOA, and it is the architecture that allows two governments who cannot publicly back down from incompatible positions to actually negotiate in private over what each side might be prepared to concede if a settlement could be reached. The negotiations themselves are conducted incrementally, with the Omanis preferring to build trust through smaller items before engaging the central substantive disputes, and the first sessions of this round have, according to a Reuters reconstruction Sunday evening, focused on procedural questions about meeting frequency, scope of topics, and the deliverables that each side would consider acceptable at the end of an initial framework round.

The substantive question, which is the relationship between the U.S. naval blockade and Iranian nuclear concessions, has not been engaged directly in the opening sessions. Both delegations have accepted the Omani pacing without visible objection, which is itself a small positive sign about the seriousness of the talks. The Iranian opening proposal, communicated to American negotiators through Omani intermediaries Friday and refined over the weekend, would lift the blockade in exchange for a temporary halt to uranium enrichment above 60 percent purity, the resumption of International Atomic Energy Agency inspections at the Natanz and Fordow enrichment facilities, and the release of the Iranian assets currently frozen in South Korean and Iraqi banks under previous sanctions designations. The proposal is closer to the JCPOA framework than to anything the Trump administration has previously discussed publicly, and it does not address Iranian missile programs, Iranian support for the Houthis or Hezbollah, or the verification mechanisms that any sustainable agreement would require. It is, however, a serious opening rather than a rhetorical one, and the American response will be calibrated accordingly.

The American position, communicated through Witkoff in his preliminary meetings with the Omani foreign minister Saturday evening and refined in Sunday's first formal session, is that any agreement must include verifiable limits on Iranian missile inventories above the 1,000-kilometer range threshold, full disclosure of all enrichment facilities including the suspected Bahrami site near Isfahan that satellite imagery first identified in November 2024, and verifiable Iranian commitments to terminate weapons transfers to the Houthis in Yemen, Hezbollah in Lebanon, and the Iraqi Popular Mobilization Forces. The blockade would lift in stages tied to verifiable compliance with each of these commitments rather than at the conclusion of an agreement signed but not yet implemented. The two opening positions are far apart on substance, but they are closer together than the public rhetoric of the past four weeks would suggest, and both sides have visibly given up the maximalist demands they were articulating during the active phase of the air campaign and the immediate post-ceasefire period. The willingness to negotiate from positions that contemplate compromise is the precondition for any agreement, and the precondition appears to be present on both sides.

Friday's Houthi missile strike on the Greek-flagged tanker Sounion II in the Bab el-Mandeb is on the Muscat agenda, and Witkoff has reportedly raised it directly in the opening sessions. The Iranian position is the standard formulation that the Houthis act independently of Iranian direction, and the American position is that Iranian materiel and intelligence enable Houthi operations and that any plausible agreement must therefore include Iranian commitments to constrain Houthi behavior even if Tehran does not formally concede that it directs that behavior. The truth, which both sides understand even when neither will articulate it, is somewhere in between. Tehran does not micromanage Houthi targeting decisions, but the Houthis cannot conduct sustained anti-ship missile operations against modern commercial shipping without Iranian targeting data, Iranian missiles, and Iranian intelligence support, and any agreement that meaningfully addressed Iranian arms transfers to Yemen would, in operational practice, sharply degrade Houthi capability over the eighteen-month period required to consume current inventory. Whether Iran is willing to make that concession in a written agreement is the question Witkoff is now asking through Omani intermediaries, and the answer will significantly shape what kind of broader settlement is possible.

The domestic political clock in Washington gives Witkoff's mission unusual urgency. The 47-member House letter invoking the War Powers Resolution arrived two days before he departed, and the 60-day War Powers clock on the blockade itself runs out June 11. The administration needs a diplomatic deliverable from Muscat before that clock expires, or it faces a constitutional confrontation with the conservative wing of its own party that the Speaker's procedural tools cannot indefinitely defer. The Omani channel is now the cleanest available path to a deliverable, and the sustained Witkoff presence in Muscat reflects that calculation rather than any independent diplomatic enthusiasm for the venue. The risks are real, of course. Negotiations conducted in opacity can collapse without anyone outside the room knowing they were under way, the opacity itself complicates the congressional consultation that has already become a sore point with the conservative members who signed the War Powers letter, and the precedent the administration is setting (that significant national security commitments can be negotiated without public visibility) is one that conservative critics of the JCPOA spent years denouncing under the previous administration. The administration's calculation is that the strategic stakes justify the procedural tradeoffs, which is a defensible calculation but not a costless one.

The first credible signal of progress, if there is progress, will likely be a leak, since negotiations of this kind characteristically begin to leak when one side wants to stress-test a possible agreement against its own domestic opposition before formally committing to it. A leak from the Iranian foreign ministry to a Tehran newspaper this week would suggest Tehran is testing whether Mojtaba Khamenei and the IRGC will accept the broad outlines without forcing a public disavowal that would close off the deal, while a leak from the State Department to the Washington Post would suggest the Trump administration is running a parallel test on Republican senators and the conservative House caucus before the Speaker has to face a vote on a question the administration would prefer he never schedule. Either kind of leak would mean the talks have produced something concrete enough to leak, and the absence of leaks over the next ten days would mean they have not, and that the Muscat track is following the Islamabad track into the file marked diplomatic effort that did not survive contact with the substantive disagreements it was meant to address. For the moment, both delegations are in Muscat, the Sultan's guesthouses are occupied, the Omani foreign ministry is shuttling between them, and the next move belongs to negotiators working in conditions that neither government is prepared to publicly acknowledge for some time yet.