Rubio Says No Sanctions Relief for Hormuz Alone, Cites Nuclear Shift

Secretary of State Marco Rubio told the Senate Foreign Relations Committee on Monday that the United States has not offered Iran sanctions relief in exchange for reopening the Strait of Hormuz, pushing back on speculation that Washington was prepared to ease economic pressure simply to restore oil transit through the world’s most critical chokepoint, according to Middle East Eye.

Any relief, Rubio said, would require Tehran to meet conditions on its nuclear program — a statement that aligns the administration’s public posture with the toughened deal terms President Trump sent back to Iran over the weekend but that carries new weight coming under oath before a congressional committee.

A nuclear opening

In the same hearing, Rubio disclosed what he described as a shift in Iran’s negotiating posture. Tehran, he told lawmakers, is now willing to discuss “aspects of its nuclear programme” that it had previously refused to mention, Middle East Eye reported. Rubio did not specify which elements of the program Iran has put on the table, and he cautioned that a willingness to discuss is not a guarantee of a deal.

The disclosure is significant because Iran’s nuclear program has been the most intractable component of the negotiations. The IAEA said Monday that transferring Iran’s approximately 440 kilograms of near-weapons-grade enriched uranium out of the country is technically feasible but diplomatically and logistically difficult. If Iran is now willing to engage on enrichment levels, stockpile disposition, or verification protocols that it previously treated as off-limits, the negotiating landscape has changed — even if the change does not yet amount to a breakthrough.

Rubio’s framing kept expectations carefully calibrated. He characterized Iran’s shift as a positive signal rather than a concession, and he repeated the administration’s position that no sanctions relief would flow until nuclear conditions are verifiably met. The testimony amounted to a public hardening of the link between Hormuz and Iran’s nuclear file — two issues that Tehran has consistently tried to negotiate on separate tracks.

IRGC warns of greater readiness

Iran’s military establishment delivered its own message on Monday. An IRGC spokesman said Iran’s armed forces are ready “more than in the past” if war with the United States resumes, according to Middle East Monitor. The spokesman said Tehran would use “different” weapons in any renewed conflict and claimed that the United States could not remove the Strait of Hormuz from Iran’s control “even for a few minutes.”

The language tracks the IRGC’s broader messaging strategy throughout the conflict: framing Hormuz access as a sovereign Iranian asset rather than an international waterway, and reinforcing that any deal must be understood in Tehran as a choice rather than a capitulation. It also serves as a direct response to the harder terms Trump and Rubio have outlined. If Washington insists on nuclear concessions before any sanctions relief, the IRGC wants the cost of no deal to remain visible.

The readiness claim is difficult to verify independently, but the operational picture supports at least part of it. The IRGC has maintained effective control over Hormuz transit for weeks, running a permit-based system that has reduced daily vessel traffic to a fraction of pre-conflict levels. HSBC warned Monday that the resulting supply squeeze in physical oil markets could trigger disorderly price spikes as global inventories approach critical thresholds.

EU backs conditional sanctions relief

The European Union offered a parallel diplomatic channel on Monday. EU foreign policy chief Kaja Kallas said she sees a “tenuous diplomatic opening” to extend the ceasefire and reopen Hormuz, but insisted that any deal must address Iran’s nuclear stockpiles and missile capabilities, OilPrice reported.

The EU’s position is broadly aligned with Rubio’s testimony: sanctions relief is available, but only through a pathway that requires verified nuclear concessions. Brussels is offering Tehran a face-saving route — negotiating through the EU rather than directly capitulating to Washington — but the substantive conditions are the same. Kallas’s use of “tenuous” was deliberate, signaling that European capitals are not confident the opening will hold.

The convergence between the US and EU positions narrows the diplomatic space available to Iran’s negotiators. Tehran has historically exploited gaps between Washington and European capitals, playing one off the other to extract better terms. With Rubio tying sanctions relief explicitly to nuclear conditions and the EU echoing that framework, the room for such maneuvering has shrunk.

Iran reviews latest ceasefire proposal

Iran is currently reviewing the latest US ceasefire proposal, according to OilPrice, though no timeline for a response has been disclosed. The proposal incorporates the stricter nuclear and Hormuz provisions that Trump added over the weekend, and Rubio’s testimony suggests the administration is not prepared to soften those terms.

The ceasefire uncertainty remains, by OilPrice’s assessment, the single biggest driver for oil markets. The pattern of the last several weeks — diplomatic optimism followed by operational stalemate — has conditioned traders to discount rhetoric and watch Hormuz transit volumes and Iranian military positioning instead.

What Rubio’s testimony signals

Rubio’s appearance before the committee served multiple audiences simultaneously. For Congress, it established the administration’s red lines on the record: no sanctions relief without nuclear concessions, no separate deal on Hormuz alone. For Tehran, it sent a message that the tougher terms Trump outlined over the weekend are policy, not posturing. For the oil market, it confirmed that a quick resolution built solely around reopening the strait is not on the table.

The disclosure of Iran’s willingness to discuss previously off-limits nuclear issues adds a new variable. If that signal is genuine, it could open a path toward the kind of comprehensive agreement that both sides have publicly said they want but privately treated as unlikely. If it is a tactical move designed to buy time while the IRGC consolidates its hold on Hormuz, it will join a long list of signals that went nowhere.

The administration is also managing a separate crisis on the Lebanon front, where Trump intervened to block Israeli strikes on Beirut. Iran’s foreign minister has demanded that any ceasefire with Washington be a ceasefire on all fronts, including Lebanon — a condition that would require the US to deliver Israeli restraint as part of any Iran deal. Rubio did not address the Lebanon linkage directly in his testimony, but the two tracks are increasingly difficult to separate.

The next 48 hours will be shaped by whether Iran responds to the latest ceasefire proposal and whether Rubio’s characterization of a nuclear opening translates into concrete negotiating language. Until then, the gap between Washington’s conditions and Tehran’s demands remains the central fact of the conflict.

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For more on the nuclear track, see IAEA chief calls Iran uranium transfer difficult but not impossible. For the oil market impact, see HSBC warns of oil super-squeeze as Hormuz nears tipping point. For the Lebanon dimension, see Trump blasts Netanyahu, blocks Israeli plan to strike Beirut.