A possible diplomatic opening emerged in the U.S.-Iran war on May 28, but the arrangement described by American officials was still provisional enough that it could not yet be treated as a settled ceasefire renewal. By the end of the day, Washington was presenting a broad outline for another 60 days of calm and follow-on nuclear negotiations, while also acknowledging that key approvals and several technical details were unresolved.
The Associated Press said the account came from a U.S. official familiar with the talks. Iran had not publicly confirmed the understanding. Vice President JD Vance later said there was a tentative agreement, yet he also cautioned that President Donald Trump might still decline to sign off. Vance added that negotiators were still refining wording, which places the development somewhere between a framework and a final political commitment.
What made the proposal important was its scope. Under the terms described to AP, Tehran would stop collecting transit charges in the Strait of Hormuz and would clear sea mines from that route within 30 days. In exchange, the United States would begin easing its maritime squeeze on Iranian ports and would loosen sanctions enough to let Iran expand oil sales. Those measures aimed directly at the conflict's most globally significant chokepoint, since the war had sharply reduced commercial traffic through a corridor that normally carries a major share of internationally traded oil and gas.
Yet diplomacy was moving alongside fresh military friction. AP said Kuwait intercepted incoming Iranian missiles the previous day, citing U.S. Central Command. American forces also carried out new operations late Wednesday, including the destruction of several one-way attack drones near the strait and a strike on a launch-control site in Bandar Abbas. Iran, for its part, said it had answered earlier attacks by firing on a U.S. base somewhere in the Gulf, though it did not name the country involved.
Economic pressure was also mixed with the outreach. Treasury Secretary Scott Bessent said energy prices could drop quickly if the arrangement took hold, but the Treasury Department simultaneously announced additional sanctions targeting the Iranian military's oil network. That combination reinforced how uncertain the diplomatic opening remained.
One of the hardest issues was left for the next stage. AP said early nuclear talks would have to address Iran's stock of uranium enriched to 60 percent purity, which the International Atomic Energy Agency put at 440.9 kilograms, or 972 pounds. Vance said outstanding questions still covered both that material and the broader enrichment issue, and the report said Tehran had not committed to surrendering the stockpile.
Taken together, the May 28 evidence supports a narrow conclusion. U.S. negotiators described a serious but unfinished bargain touching shipping, sanctions and nuclear risk, even as armed exchanges and political uncertainty made clear that the war's pause was still fragile.
