Global oil markets shrugged off a significant U.S. intervention this week, with prices climbing to their highest levels in nearly four years. The Biden administration's decision to temporarily release approximately 140 million barrels of stranded Iranian crude failed to alleviate a deepening supply crisis, as geopolitical tensions and logistical disruptions continued to tighten the market.
Benchmarks Defy Intervention
On Friday, Brent crude futures settled at $112.19 per barrel, a price point not seen since July 2022. This surge occurred despite Washington's waiver, issued on March 20, which allows for the discharge of eligible Iranian cargoes through April 19. Analysts immediately questioned the efficacy of the move. "The White House is running out of options," noted Brett Erickson of Obsidian Risk Advisors, highlighting the persistent constraints at the critical Strait of Hormuz.
The physical market told an even more dramatic story. On Thursday, the Middle East benchmark Dubai crude soared to a record $166.80 per barrel. According to David Jorbenaze at ICIS, spot differentials reveal "a much tighter system beneath the headline price." Refiners, particularly in Asia, are scrambling for medium and heavy sour crude grades, which has driven up the price of alternative supplies like Russia's Urals and Norway's Johan Sverdrup.
The Hormuz Chokepoint
The core of the crisis remains the Strait of Hormuz, a vital corridor for global energy flows. Approximately 20% of the world's seaborne oil and liquefied natural gas typically transits this narrow waterway. Recent attacks on energy infrastructure throughout the Gulf have severely disrupted operations. In response, Iraq declared force majeure on foreign-operated oilfields after export flows froze, slashing production from its Basra region to 900,000 barrels per day from a previous 3.3 million.
This has created a profound supply shortfall. Traders and consultancies estimate that the 130 million to 170 million barrels of Iranian oil currently afloat represent less than 14 days' worth of the recent production losses from the Middle East—a region that supplies about 60% of Asia's crude. Indian and other Asian refiners are actively exploring whether they can secure these newly available cargoes.
Market Scramble and Regional Responses
The supply squeeze is forcing major adjustments across the industry. In China, Sinochem has scaled back crude processing at its Quanzhou plant to roughly 60% of capacity and is urgently seeking immediate shipments. Meanwhile, Saudi Arabia is attempting to provide some relief. Unipec, the trading arm of Sinopec, is scheduled to lift about 24 million barrels of mainly Arab Light crude from the Red Sea port of Yanbu in March. However, heavier grades remain in critically short supply for many complex refineries.
China continues to be the dominant buyer of Iranian oil, accounting for over 80% of Tehran's seaborne exports in 2025—roughly 1.38 million barrels per day according to data from Kpler. Most of this volume is absorbed by independent "teapot" refineries in Shandong province. Since December, Iranian Light has traded at an $8 to $10 per barrel discount to Oman crude delivered to China, a gap that may narrow if the U.S. waiver attracts broader buying interest.
A Temporary Patch, Not a Solution
For many market participants, the U.S. waiver is viewed as a stopgap measure. John Kilduff of Again Capital described the 140-million-barrel release as "not a whole lot" in the context of global demand. Phil Flynn of Price Futures Group observed that despite a pullback from Thursday's intraday spike, the market was only "gaining more confidence in supply" constraints. The underlying fundamentals, therefore, continue to support higher prices.
The path forward remains uncertain. Iran has signaled to Japan's Kyodo news agency that it might allow safe passage for Japan-linked vessels through the Strait of Hormuz—if Tokyo reopens diplomatic talks. This suggests a slim possibility for reduced shipping risks. However, after a sustained series of strikes on tankers, refineries, and export terminals across the Gulf, the market is still grappling with the extensive fallout and pricing in a prolonged period of elevated risk and tight supply.
