US strikes Iranian naval assets as nuclear talks stall over uranium disposal
CENTCOM confirms 'self-defense' operations targeting missile infrastructure in the Persian Gulf while Trump administration maintains blockade of waterway carrying 21% of global petroleum.
US Central Command conducted strikes against Iranian missile launch sites and naval vessels in the Persian Gulf on 25 May, escalating tensions amid a fragile ceasefire and deadlocked nuclear negotiations over uranium enrichment limits and stockpile disposal. The strikes targeted coastal missile infrastructure and Iranian boats near the Strait of Hormuz, according to CNN, as the Trump administration maintains its naval blockade of Iranian ports—a measure that has cost Tehran $4.8 billion in oil revenue between 13 April and 1 May. The timing compounds pressure on Iran as diplomatic efforts to finalise a peace agreement falter over disputes about the duration of uranium enrichment moratoria and the physical removal of highly enriched uranium from Iranian territory.
The US-Iran war began 28 February 2026 with coordinated strikes that killed Supreme Leader Ali Khamenei. A ceasefire declared 8 April collapsed into competing blockades: the US Navy has interdicted vessels bound for Iranian ports since 13 April, while Iran established the Persian Gulf Strait Authority to vet and tax ships transiting the Strait of Hormuz—a waterway carrying approximately 20 million barrels per day, or roughly 21% of global petroleum consumption, according to the EIA.
Blockade economics shift negotiating leverage
By 22 May, US forces had turned away 94 vessels attempting to breach the Iranian port blockade, per data from the naval blockade enforcement operation. At the 1 May mark, 31 tankers laden with 53 million barrels of Iranian crude remained stranded in the Gulf, unable to reach buyers. The revenue loss—$4.8 billion over the first 18 days—represents the immediate economic cost of the blockade, though the figure excludes opportunity costs from production cuts and contract penalties.
Oil Markets registered the shock in early May, with Brent crude reaching $111.23 per barrel on 4 May, a 2.9% single-day rise, according to CNBC. Analysts at Energy Aspect warned of recession risk, with founder Amrita Sen stating the market is “sleepwalking into potentially a pretty big recession.” Current pricing as of 26 May was unavailable in real-time data feeds, but the International Energy Agency has characterised the conflict as the greatest global energy security challenge in its history.
Nuclear diplomacy deadlocks on uranium terms
Negotiations reached a near-breakthrough on 24 May, with a memorandum of understanding reportedly close to finalisation, according to diplomatic sources. The core sticking point: the duration of Iran’s uranium enrichment moratorium. Washington initially demanded a 20-year freeze; Tehran countered with five years. By early May, the positions had narrowed to a 12-15 year consensus range, per Axios reporting.
A second impasse emerged over the physical disposition of Iran’s highly enriched uranium stockpile—currently enriched to 60% purity, near weapons-grade threshold. Iran has refused to transfer the material out of the country, a red line for US negotiators who view removal as the only verifiable constraint on rapid weapons breakout. NPR reported the Iranian position as of 25 May, hours before CENTCOM announced the latest strikes.
“It will only be a Great Deal for all or, no Deal at all — Back to the Battlefront and shooting, but bigger and stronger than ever before — And nobody wants that!”
— Donald Trump, US President (Truth Social, 26 May 2026)
Secretary of State Marco Rubio has framed Iran’s Strait of Hormuz control as an international legitimacy test, stating: “Is the world going to accept that Iran now controls an international waterway? What is the world prepared to do about it?” Iran’s military adviser Mohsen Rezaee, former IRGC commander, countered that the US “is doomed to fail in any naval blockade,” citing what Tehran characterises as a defeat in attempting to reopen the Strait by force.
Strait vulnerability compounds supply risk
The Strait of Hormuz remains the critical variable in global energy security. Asian markets depend on the waterway for 84% of petroleum flows transiting the chokepoint, with US Energy Information Administration data showing approximately 20 million barrels per day of petroleum liquids pass through the 21-mile wide channel at its narrowest point. Iran’s establishment of the Persian Gulf Strait Authority—a vetting and taxation regime for ships seeking passage—has effectively asserted sovereign control over transit, forcing commercial operators to navigate competing US and Iranian blockade enforcement.
What to watch
The immediate question is whether the 25 May strikes represent tactical escalation to extract concessions or a breakdown of the negotiating framework entirely. Trump’s Truth Social post on 26 May suggests the administration views military pressure as compatible with ongoing talks—an “all or nothing” posture that mirrors his approach to the north korea nuclear talks collapse in 2019.
Energy markets face two cascading risks: first, any Iranian retaliation that further constricts Strait transit; second, the diplomatic failure scenario in which the blockade becomes a permanent fixture and oil supply adjusts to a 20% reduction in available routing capacity. Asian buyers—Japan, South Korea, China, India—would bear the majority of cost increases, given their 84% dependency on Strait flows. The International Energy Agency’s characterisation of this as the greatest energy security challenge suggests institutional recognition that market pricing has not fully internalised tail risk.
On the diplomatic track, watch for any US flexibility on the uranium removal demand. If Washington accepts an in-country dilution or storage regime with International Atomic Energy Agency monitoring, the 12-15 year moratorium becomes viable. If uranium removal remains non-negotiable, Iran’s refusal closes the pathway to agreement and the military track dominates.