WASHINGTON | The United States and Iran moved closer Saturday to an initial agreement intended to halt their three-month war, reopen the Strait of Hormuz and begin a longer negotiation over nuclear restrictions and economic relief, but Tehran rejected Pakistan’s announced Sunday signing timeline and cautioned that no final ceremony had been fixed. Pakistani Prime Minister Shehbaz Sharif said negotiators had reached agreed text and were working on the next steps. President Donald Trump described the arrangement as close to completion. Iran’s Foreign Ministry, however, said the proposed Islamabad memorandum would not be signed Sunday and blamed continuing hesitation by the other side. The conflicting statements leave the negotiations advanced but unfinished.
The difference between agreed wording and a signed, enforceable settlement is central to understanding the moment. Mediators may have narrowed the language enough for governments to circulate a common draft, but leaders still must authorize the document, identify the obligations that begin immediately and decide how violations will be verified. The first memorandum is expected to focus on ending active hostilities and easing restrictions around Hormuz. Separate technical talks would then address Iran’s enriched uranium, inspections, missile capabilities and the scope and timing of sanctions relief. Those later negotiations are likely to be more difficult than the initial ceasefire document.
Pakistan has emerged as the principal mediator because it maintains working relationships with Washington, Tehran and several Gulf governments. Sharif’s statement that the final text had been reached was the strongest public claim from an intermediary, and Pakistani officials discussed electronic signing and follow-up negotiations. A senior U.S. official was more cautious, describing the parties as roughly 80 to 85 percent of the way toward an agreement. Iran did not deny that the talks were close, but its rejection of the announced date showed that negotiators had not synchronized their public positions or completed every political approval.
The proposed opening phase appears to link a halt in military action with changes in maritime restrictions. Iran has limited traffic through the Strait of Hormuz, while the United States has maintained naval pressure around Iranian ports and shipping. A memorandum could require both sides to reduce those measures and establish procedures for commercial transit. The economic effect would be substantial because the strait carries a major share of globally traded oil and liquefied natural gas. Yet the waterway cannot be normalized by diplomatic language alone. Shipowners, insurers, banks and naval commanders need operational instructions that are consistent and credible.
Iran has reportedly sought a continuing role in regulating passage through the strait, potentially including service fees or inspections. Washington and its allies emphasize freedom of navigation and oppose a system that could become an arbitrary toll or a mechanism for detaining vessels. The final document will need to distinguish ordinary maritime administration from coercive control. It also must explain who resolves disputes when a ship is stopped, what evidence is required to establish a violation and whether neutral states or international organizations will participate in monitoring.
Insurance is likely to remain expensive even after a signing. Underwriters assess the probability of missile attack, drone activity, seizure, collision and mine damage based on behavior, not only promises. Shipping companies may wait for several uneventful passages before accepting normal terms. Port backlogs, damage assessments and delayed cargoes could slow recovery further. Energy markets have already responded to the probability of an agreement, but physical flows will determine whether the war premium disappears or returns after the first incident.
The nuclear provisions are more uncertain. The Trump administration has said any lasting deal must prevent Iran from developing a nuclear weapon and include verifiable limits on enriched material. Iran says its program is civilian and has resisted terms it considers surrender. Reports describing the framework indicate that nuclear questions could be moved into a 60-day technical process after hostilities stop. That sequencing may be necessary to secure an immediate ceasefire, but it creates a future deadline that could become another crisis if the parties cannot agree on inventories, access and disposal.
Iran has signaled that it may accept dilution of some enriched uranium rather than complete destruction or removal. From a technical standpoint, material can be blended down, exported, sealed or otherwise placed beyond immediate use, but each option requires accurate measurement and continuous verification. International inspectors need access to facilities, records and samples, and the parties need an agreed process for resolving discrepancies. A political promise to address the stockpile later is not equivalent to a completed reduction, although it may be the only realistic bridge to ending the war first.
Sanctions relief will require equally detailed sequencing. A president can issue licenses, waivers and enforcement guidance more quickly than Congress can repeal statutory restrictions. Iran will seek relief that banks, shippers and buyers can use without fear of later punishment. The United States will want measures that can be reversed if Iran breaches the agreement. A phased system tied to verified milestones could meet both needs, but every phase creates another opportunity for disagreement over whether obligations were completed and whether the corresponding relief was sufficient.
Frozen Iranian assets may form part of the arrangement. Allowing controlled access to specified accounts can provide Tehran with an immediate economic benefit while preserving limits on how the money is used. The practical details matter: which funds are covered, where they are held, in what currency, through which banks and for what permitted purposes. Large headline figures can mislead when the underlying accounts remain restricted by national law, private compliance decisions or competing legal claims.
The proposed agreement also intersects with fighting involving Israel and Hezbollah in Lebanon. Israel is not a formal party to the U.S.–Iran talks and has not accepted every reported regional provision. Tehran wants a settlement that reduces attacks on its allies and ends Israeli military operations in contested areas. Washington may pursue parallel assurances, but a bilateral memorandum cannot legally bind Israel without its participation. Any language implying that the agreement ends every regional front would be vulnerable if one military continues operations that another side considers a breach.
Military activity has continued near Hormuz while negotiations advance, underscoring the danger of diplomacy occurring alongside active operations. A commander can misidentify a vessel, an armed group can act without authorization or a strike planned before a political announcement can occur afterward. The parties need reliable deconfliction channels staffed by officials empowered to halt escalation and clarify incidents. Without those channels, a local event could collapse an agreement that national leaders still want.
Domestic politics will constrain both governments. Trump can argue that military and economic pressure forced Iran to negotiate, but he will face questions from lawmakers and allies about sanctions relief, nuclear concessions and commitments to Israel. Iranian leaders must explain any reopening of Hormuz and acceptance of inspections to a population that has endured casualties, damaged infrastructure and economic hardship. Mediators can help by drafting reciprocal language that allows both sides to claim protection of sovereignty rather than capitulation.
Congress may demand the full text, classified briefings and an explanation of which commitments the president can implement without legislation. Lawmakers could restrict funding, challenge sanctions waivers or require reporting on compliance. A political memorandum can begin quickly but may be easier for a later administration to reverse. A treaty would be more durable but would require a lengthy ratification process that does not match the urgency of the battlefield. Negotiators may therefore use a layered structure: immediate executive commitments followed by technical annexes and later legislation.
Regional governments have powerful incentives to support de-escalation. Gulf states depend on reliable shipping and have faced the possibility that their ports, refineries or military facilities could become targets. Pakistan has invested prestige in the mediation and wants recognition as a capable diplomatic actor. Qatar, Saudi Arabia and Turkey can assist with financial channels, monitoring and reconstruction. Their involvement can strengthen implementation, but none can substitute for decisions by Washington and Tehran when the first serious dispute occurs.
The humanitarian consequences extend beyond oil prices. The war has killed and injured civilians, displaced families and damaged power, transport and medical infrastructure. A ceasefire must include practical protections for humanitarian access, medical evacuation, utilities and port operations. Reconstruction commitments should identify funding, auditing and security conditions rather than promise large sums without a delivery mechanism. People living under threat will judge the agreement by whether attacks stop and essential services return, not by the language used at a signing ceremony.
Detainees, missing personnel and the recovery of remains could become early tests of trust. These issues carry intense domestic importance and can derail broader negotiations if left unresolved. A separate humanitarian channel with verified lists, access for neutral organizations and staged exchanges could prevent individual cases from becoming bargaining tools. Families need reliable information regardless of whether nuclear and sanctions talks move quickly.
The agreement’s verification structure will determine whether the memorandum becomes durable. The parties need definitions of prohibited military activity, schedules for lifting restrictions, methods for confirming commercial passage and standards for nuclear evidence. A joint commission supported by neutral technical experts could address disputes before they trigger retaliation. If each government can declare itself compliant while rejecting the other side’s evidence, the ceasefire will remain vulnerable to propaganda and tactical manipulation.
Sequencing remains the hardest practical problem. Iran may demand financial relief and maritime changes before altering nuclear or military posture. Washington may insist that Iranian actions be verified before benefits begin. Escrow arrangements, synchronized announcements and step-by-step certification can narrow the trust gap. They require an institution or group of mediators capable of confirming milestones quickly enough that neither side believes it moved first and received nothing in return.
Public language can either support or undermine implementation. If both leaders claim total victory, later reciprocal concessions may look like betrayal. Sustainable diplomacy often permits governments to describe the same arrangement differently to domestic audiences, but operational provisions cannot remain vague. Banks, naval officers, inspectors and port managers need clear instructions even when political statements preserve ambiguity.
The first week after signing would be more important than the ceremony. Ships would test transit procedures, Treasury officials would issue sanctions guidance, military commanders would interpret new rules and technical teams would begin the nuclear process. Some delays are inevitable, but unexplained delays can be interpreted as deception. A public calendar of major milestones and daily contact among negotiators would reduce the risk that routine implementation problems become a new political crisis.
Oil markets have already demonstrated how rapidly expectations can change. Prices fell as the probability of an agreement increased, then became volatile when Iran challenged the timetable. That movement reflects the market’s estimate of future supply, not confirmation that tankers are already moving normally. A single detained ship or renewed strike could rebuild the premium. Consistent transit, lower insurance costs and usable payment channels are the evidence that will matter after the headlines.
The most plausible near-term outcome is a limited memorandum followed by difficult implementation rather than a comprehensive peace settlement. That would still be consequential. Stopping attacks, easing maritime restrictions and creating time for technical negotiations would reduce immediate danger. It would not settle Iran’s nuclear future, missile policy, regional armed groups, Israel’s role or the long-term sanctions relationship. Public understanding should include both the value and the limits of the first step.
For now, the verified record supports cautious optimism rather than certainty. Pakistan says common text exists. Iran says an agreement has never been closer but rejects the announced Sunday signing. The United States says substantial progress has been made while emphasizing physical and verifiable milestones. Until the document is signed and implemented, the negotiations remain an advanced diplomatic process, not a completed peace.
The coming days will reveal whether the parties can convert a shared interest in ending the war into obligations strong enough to survive their first disagreement. The decisive evidence will not be another announcement. It will be restrained military behavior, regular commercial passage, enforceable sanctions guidance and inspectors able to verify what each side has promised.
Additional Reporting By: Reuters — U.S.–Iran negotiations and Hormuz terms; Reuters — Iran rejects Sunday signing timeline; The Washington Post; The Wall Street Journal; Associated Press