US and Iran close in on one-page war ceasefire memo

On May 6, 2026, Axios reported that the United States and Iran are in advanced negotiations on a 14-point, one-page memorandum of understanding to formally end the conflict that has been ongoing since U.S. and Israeli strikes on Iranian nuclear facilities in February and March 2026. The MOU would declare an end to the war, open the Strait of Hormuz, and begin a 30-day window for detailed nuclear negotiations. White House officials said this was the closest both sides had come to a formal framework since the war began.

Trump's special envoy Steve Witkoff and presidential advisor Jared Kushner are leading U.S. negotiations, with Pakistan serving as the primary diplomatic channel. Iranian Foreign Minister Abbas Araghchi and Parliament Speaker Mohammad Bagher Ghalibaf have led the Iranian delegation in direct and indirect talks that have alternated between Islamabad and other venues since April 2026.

The proposed MOU includes several commitments from Iran. Iran would pledge never to seek or develop nuclear weapons, commit to a moratorium on uranium enrichment for a negotiated period of years, allow enhanced snap inspections by International Atomic Energy Agency inspectors of its nuclear sites, and agree to remove its stockpile of highly enriched uranium from Iranian territory. The Iranian government would also commit to ceasing hostilities and not operating its underground nuclear facilities during the moratorium period.

From the United States, the MOU would require a phased lifting of economic sanctions on Iran and a gradual release of billions of dollars in frozen Iranian funds held in foreign banks. The Strait of Hormuz, which Iran's IRGC Navy has blockaded since March 2026, would be reopened to international shipping traffic. The IRGC Navy signaled on May 6 that safe passage was possible under new procedures, though Iran's insistence on collecting a transit toll from commercial vessels remains a sticking point.

The central dispute in the negotiations is the length of Iran's uranium enrichment moratorium. Iran proposed a five-year moratorium, after which it would retain the right to enrich uranium to low levels for civilian energy purposes. The United States demanded a 20-year moratorium, longer than any previous nuclear agreement. Three sources told Axios that a 12-to-15-year moratorium is the most likely compromise, with the U.S. pushing for a provision that automatically extends the moratorium if Iran is found to have violated its terms.

After the moratorium ends, Iran would be permitted to enrich uranium to 3.67%, the level allowed under the original 2015 JCPOA, for civilian nuclear energy purposes. The United States hasn't agreed to this post-moratorium enrichment right, and it remains an open item. Iran also wants a formal renunciation of the U.S.'s right to restart sanctions under JCPOA's snapback mechanism, which the U.S. hasn't agreed to include in the one-page MOU.

Vice President JD Vance, along with Witkoff and Kushner, traveled to Islamabad on April 11, 2026, for direct talks with Araghchi and Ghalibaf. Pakistan's Army Chief General Asim Munir played a key mediating role, and Trump publicly credited Pakistan with facilitating the initial two-week ceasefire announced that month. Iran agreed to the ceasefire on April 11 after Trump threatened resumed bombing if Iran didn't engage.

Araghchi traveled to Beijing on May 6 to brief Chinese Foreign Minister Wang Yi on the state of negotiations, reflecting China's economic stake in the outcome. China is Iran's largest oil buyer, purchasing oil that had been flowing through routes outside the Hormuz blockade at discounted prices. A formal Hormuz reopening under a U.S.-Iran deal would affect China's access to Iranian oil supply chains and potentially its leverage in the negotiations.

The constitutional dimension of the MOU raises a fundamental question about executive power: if the agreement commits the United States to lift congressional Iran sanctions and release frozen funds, it may require Senate ratification as a treaty under Article II, Section 2 of the Constitution. The 1994 Iran Sanctions Act and subsequent Iran sanctions legislation were passed by Congress, and some legal scholars argue that only Congress can formally lift them. The Trump administration has indicated it would frame any agreement as an executive agreement, not a treaty, to avoid the two-thirds Senate ratification threshold.

Senate Foreign Relations Committee Chairman Jim Risch (R-ID) and other lawmakers have already warned that any Iran deal must come to the Senate for ratification. Sen. Tom Cotton (R-AR) introduced legislation in April 2026 requiring Senate review of any Iran nuclear agreement, echoing the Iran Nuclear Agreement Review Act of 2015 that was passed during the JCPOA negotiations. The administration's response to these legislative demands will shape how the MOU is ultimately implemented.

Trump pursued the Iran deal through informal diplomatic channels that bypass traditional State Department processes, consistent with his first-term pattern of relying on personal envoys. Witkoff, a real estate developer who served as Trump's Middle East envoy during the Abraham Accords and Gaza ceasefire negotiations, has no formal diplomatic credentials but has conducted the most direct U.S.-Iran talks since the war began. Kushner, Trump's son-in-law, has played an advisory role without any formal national security title.

This negotiating structure has drawn criticism from former career diplomats, who argue that agreements negotiated without State Department involvement lack institutional continuity and technical expertise. Former Ambassador to Iran Robert Malley, who led U.S. negotiations under Biden, told PBS in April 2026 that Witkoff's personal style had moved things faster than institutional processes would allow but created risks if the negotiations failed due to gaps in technical detail.

The war's economic toll has accelerated U.S. pressure to negotiate. The Strait of Hormuz blockade has disrupted approximately 20% of global oil trade, contributing to oil prices averaging $115 per barrel in April 2026 and pushing gasoline prices in the United States above $5 per gallon. The blockade has affected shipping insurance rates, LNG exports from Qatar, and supply chains for Asian manufacturing economies. Goldman Sachs estimated in April 2026 that every month of continued blockade cost the global economy approximately $40 billion in higher energy and logistics costs.

For Iran, the sanctions pressure has been severe. The Iranian rial has lost more than 60% of its value since the war began, and Iran's central bank governor warned in April 2026 that the country's foreign currency reserves could be exhausted within six months if the blockade and sanctions continued. These dual economic pressures explain why both sides have incentives to close a deal even as they argue over enrichment timelines.

The MOU, if signed, would be legally distinct from a full nuclear agreement. It would commit both parties to a 30-day negotiating window but wouldn't itself contain the detailed technical terms of a final deal. Previous MOU frameworks in international diplomacy, including the 2013 Joint Plan of Action that preceded the JCPOA, have sometimes produced lasting agreements and sometimes collapsed during the detailed negotiation phase. Iran's internal divisions, between hardliners opposed to any enrichment concessions and pragmatists who see the deal as an economic lifeline, could fracture the negotiating coalition before or after an MOU is signed.

Trump issued a direct threat on May 7, posting on Truth Social that he would start bombing again if Iran didn't deliver an acceptable response to mediators. The threat reflected the administration's core negotiating posture: use the credible threat of resumed military action to keep Iran at the table. Legal analysts noted that the threat itself raised War Powers Act questions, as Congress hasn't authorized a new military campaign against Iran and the original 60-day clock on Trump's initial strike authority formally expired on May 1, 2026.