The U.S. government has abandoned a preliminary memorandum of understanding with Iran aimed at reopening the Strait of Hormuz and restarting nuclear talks, marking a sharp policy shift under the Trump administration. The collapse follows a series of attacks on commercial vessels and the expansion of U.S. sanctions targeting nearly 60 entities across five sectors, including digital assets, technology, gold, aviation, and maritime transport.
The original agreement, negotiated in June at the Palace of Versailles and signed by President Trump with Vice President JD Vance, sought to ease sanctions in exchange for Iran permitting free navigation through the strategic waterway and resuming talks on its nuclear program. Iranian officials, including Brigadier General Hossein Mohebbi of the Islamic Revolutionary Guard Corps, had asserted that the accord granted Iran authority over Strait of Hormuz access terms, a claim disputed by U.S. officials.
Iranian attacks on shipping in the strait intensified after the MOU’s collapse, with vessel traffic monitored by Kpler and the UK Maritime Trade Operations remaining well below historical averages. On Wednesday, eight commodity vessels were recorded transiting the strait, rising slightly to ten the following day, compared with a 10-day moving average of approximately 15 vessels. On Thursday, a petroleum tanker was struck by an unidentified projectile, causing a fire that was later extinguished.
The U.S. Treasury launched the "Economic Pariah Operation" on August 25, 2025, escalating pressure through secondary sanctions that now encompass five sectors. Scott Bessent, U.S. Treasury Secretary, described the measures as an "economic attack on Iran's financial connections around the world."
Regional mediation efforts involving Pakistan’s army chief, Oman’s foreign minister, and Qatar’s prime minister have stalled, with Iran demanding greater control over traffic routes. Umer Karim, a researcher at the University of Birmingham, told Reuters the original MOU is "essentially dead in all aspects," complicating prospects for compromise.
Brent crude oil prices have climbed above $88 per barrel in response to the heightened tensions, reflecting concerns over supply disruptions in a critical chokepoint for global energy markets.
