Trump Rejects Iran Nuclear Proposal, Oil Markets Price $115 Peak as Strait Closure Enters Week Ten
White House hardline stance ends diplomatic path, locking in prolonged Strait of Hormuz disruption and escalating crude-driven inflation risk.
The Trump administration on Tuesday rejected Iran’s proposal to end the nine-week Strait of Hormuz closure and negotiate sanctions relief in exchange for deferring nuclear talks, marking the collapse of Pakistan-brokered ceasefire efforts and the definitive end of near-term diplomatic resolution. The decision locks in extended disruption to the 20% of global oil supplies transiting the Strait, with Brent crude reaching $108.23 per barrel on April 26 and the U.S. Energy Information Administration forecasting a $115 peak in the second quarter of 2026.
$108.23/bbl
$96.36/bbl
$115/bbl
9.1M bpd
Iran had offered to negotiate the Strait’s reopening, compensation for damage, Sanctions relief, and the lifting of the U.S. naval blockade, while proposing to address nuclear enrichment “at a later date” or in a separate deal. The House of Commons Library briefing noted that Iran’s foreign minister claimed an agreement was “just inches away” but criticised “maximalist demands” from U.S. negotiators. The core sticking point: President Trump’s insistence on zero uranium enrichment on Iranian soil, which Tehran rejected after 21 hours of negotiations collapsed in mid-April.
“The president’s red lines, namely the end of Iranian enrichment in Iran, have not changed.”
— Karoline Leavitt, White House Spokesperson
Supply Shock Mechanics
The Strait of Hormuz closure on March 4 triggered what the International Energy Agency described as the largest energy supply shock on record. Brent crude surged 55% from $72 per barrel on February 27 to nearly $120 at peak in early April, according to CNBC. Production shut-ins reached 9.1 million barrels per day in April, with QatarEnergy declaring force majeure on all exports after LNG shipments were stranded.
The EIA’s April outlook projects Brent averaging $103 per barrel in March before peaking at $115 in the second quarter, then easing below $90 in the fourth quarter as “production shut-ins slowly abate.” That forecast assumes gradual Strait reopening—an assumption now in doubt given Tuesday’s diplomatic breakdown. Retail gasoline prices are forecast to hit $4.30 per gallon this month, with diesel reaching $5.80 per gallon.
Inflation Crossover Point
Crude sustained above $110 per barrel creates direct upward pressure on headline inflation, complicating Federal Reserve policy calibration at a moment when core inflation had been moderating. The EIA forecast implies retail fuel costs will remain elevated through June, feeding into transportation and goods pricing across supply chains. The April energy outlook assumes production normalises by year-end, with Brent averaging $76 in 2027—but that hinges on Strait access restoration, now uncertain given the negotiation impasse.
Trump framed the rejection in absolute terms during remarks to Fox News: “We can’t let Iran have a nuclear weapon. So this should have been done by previous presidents. It should have been done for years, 40, 47 years.” That stance mirrors the 2018 JCPOA withdrawal playbook, but baseline tension now includes active military conflict, Supreme Leader transition to Khamenei’s appointed successor, and a nine-week energy chokepoint with no clear off-ramp.
Allied Fracture Lines
The hardline U.S. position exposes divergence among allies and adversaries on sanctions enforcement. China and Russia have opposed multilateral sanctions at the UN, while European capitals face domestic political pressure from fuel cost spikes. Iran’s deputy parliament speaker Ali Nikzad told CNN Business: “We realized if we place our foot on the throat of the Strait of Hormuz and Bab al-Mandab, 25% of the world’s economy would be affected.” That calculation—leveraging energy dependency to fracture coalition unity—gains credibility with each week of sustained crude prices above $100.
The Strait of Hormuz is a 21-mile-wide chokepoint between Iran and Oman through which roughly 20% of global oil supplies transit daily. Iran’s closure on March 4 stranded crude exports from Saudi Arabia, the UAE, Kuwait, Iraq, and Qatar, forcing a 9.1 million barrel per day supply reduction—equivalent to the entire daily output of Saudi Arabia. The U.S. maintains a naval blockade in parallel, preventing Iranian oil exports even if the Strait were to reopen.
What to Watch
Crude price trajectory through May will determine whether the EIA peak materialises or if markets price in prolonged closure with higher terminal levels. Any military escalation near Strait chokepoints—particularly involving U.S. naval assets enforcing the blockade—would spike Brent toward $120-plus levels seen in early April. Watch for EU statements on sanctions compliance and whether China or India accelerate alternative supply arrangements, signaling erosion of multilateral enforcement. Federal Reserve commentary on energy-driven inflation in upcoming policy meetings will reveal whether policymakers view crude spikes as transitory or structural. Finally, track Iranian domestic politics: Khamenei’s successor faces pressure to deliver economic relief, but Tehran’s negotiating position hardens if oil leverage appears to be fracturing Western unity. The window for diplomatic resolution narrows with each week of triple-digit crude prices.