President Donald Trump declared the U.S.-Iran interim peace agreement "over" on Tuesday, sending oil prices surging more than 5% and exposing the fragility of the ceasefire that ended a four-month conflict over the Strait of Hormuz. Iran's Revolutionary Guards responded by targeting U.S. military bases in Bahrain and Kuwait, escalating a confrontation that had briefly eased after the two nations signed a memorandum of understanding on June 17.
Trump's announcement came as oil refiners were enjoying record profits from a temporary supply windfall created by the reopening of Hormuz. The benchmark U.S. 3-2-1 crack spread, a widely watched measure of refining profitability, recently climbed above $60 a barrel, the highest level on record. Refining margins in Asia and Europe have also risen sharply. But the return of Iranian aggression threatens to disrupt the fragile market recovery and reignite the supply crisis that gripped global energy markets during the conflict that erupted on February 28.
The Strait Reopens, Then Closes Again
Total Middle East crude exports, including volumes shipped through ports in Saudi Arabia and the United Arab Emirates that bypass Hormuz, rose to 12.35 million barrels per day in June from less than 8 million bpd in May, according to Kpler data. July exports are currently expected to reach 12.5 million bpd, Kpler estimates. Regional exports remain well below their pre-war average of around 18 million bpd, but the sudden release of large volumes of crude has created a temporary glut.
Gulf producers, particularly Saudi Arabia and the UAE, are competing for market share, leading to aggressive pricing and discounts on cargoes. Producers are releasing crude stored on tankers and in onshore facilities and bringing back oilfields that were shut during the conflict, sending a growing wave of supply into a global market facing questions about demand growth. That shift is reflected in global benchmark Brent crude futures, which have retreated to around $70 a barrel, roughly where they traded before the Iran conflict erupted and $50 below the wartime peak.
Trump's comments reversed that trend immediately. Oil prices gained more than 5% after his announcement that he didn't want to engage with Tehran. The abrupt policy shift underscores the strategic reality: Iran's ability to threaten the Strait of Hormuz, through which roughly a fifth of global oil supplies once flowed, gives Tehran leverage that diplomatic agreements can't easily neutralize. The Revolutionary Guards' strikes on U.S. bases demonstrate that Iran retains both the capability and willingness to escalate when Washington revokes concessions, including the license to allow the country to sell oil.
Refiners' Windfall Won't Last
Refiners are enjoying a windfall on the products side of the equation. Fuel prices remain remarkably strong, reflecting exceptionally tight inventories after months of disruption. In the U.S., gasoline refining margins have surged by more than 60% since early June to over $56 a barrel, approaching the record highs seen during the energy crisis of June 2022 following Russia's invasion of Ukraine, now in its fourth year. The strength comes as the U.S. enters the peak summer driving season with gasoline inventories for this time of year at their lowest level in more than a decade. Stocks were heavily depleted during the Iran war as U.S. refiners boosted exports to help compensate for shortages elsewhere in the world.
Diesel markets are showing a similar pattern. Benchmark European diesel refining margins climbed above $50 a barrel as global inventories fell sharply in recent months, leaving consumers with very little buffer against supply disruptions. The outlook has tightened further following a steep decline in Russian diesel exports caused by repeated Ukrainian drone attacks on Russian refineries.
The spread between U.S. benchmark West Texas Intermediate crude prices and the 3-2-1 crack spread is currently at its narrowest level in around a decade, excluding a brief period during the COVID-19 pandemic when WTI collapsed into negative territory. Historically, such a relationship is difficult to sustain. Strong fuel demand usually translates into stronger crude demand as refiners compete for feedstock, pushing oil prices higher. The most likely outcome is that crude prices will rise as the mini-glut fades and stored barrels are absorbed by the market in the next few months, gradually eroding refiners' exceptional margins and bringing profitability back toward more normal levels.
Gold Falls as Energy Threat Returns
Gold prices fell more than 1% after Trump's announcement, a counterintuitive move that reflects investor fears of inflation and higher U.S. interest rates driven by surging energy costs. Spot gold fell 1.02% to $4,063.67 per ounce by 0850 GMT, after dropping to its lowest since July 2 earlier in the session. U.S. gold futures for August delivery shed 1.97% to $4,074.80 per ounce.
While gold is traditionally considered a safe haven, higher energy prices due to the war have raised concerns of inflation and higher interest rates, which would weigh on the non-yielding metal. Fed minutes, due at 1800 GMT, were being closely watched for clues on the future trajectory of interest rates. UBS analyst Giovanni Staunovo said, "Gold is likely to stay in a consolidation mode in the short term. We need to have further weakening of U.S. jobs data and lower U.S. inflation figures allowing Fed officials to sound less hawkish in respect to policy decisions, to see gold prices moving higher."
Markets currently expected a 66% chance for a U.S. rate hike in September, compared with 62% on Tuesday, according to the CME FedWatch tool. China's central bank on Tuesday reported its biggest monthly increase in gold reserves in more than two and a half years in June. Among other metals, spot silver fell 2.37% to $58.59 per ounce, platinum slipped nearly 3% to $1,591.88, and palladium dropped 3.9% to $1,227.18.
Why This Matters:
The collapse of the U.S.-Iran ceasefire exposes the fundamental instability of any diplomatic arrangement with a regime that views Hormuz as a strategic weapon. Iran's willingness to strike U.S. military bases immediately after Trump revoked oil export licenses demonstrates that Tehran won't honor agreements once American concessions are withdrawn. For global energy markets, this means the supply windfall refiners are currently enjoying is a temporary anomaly, not a new equilibrium. The Revolutionary Guards' capability to disrupt Gulf shipping remains intact, and the regime has shown no inclination to abandon the leverage that geography provides. Oil markets are now pricing in renewed conflict risk, which will translate into higher fuel costs for consumers worldwide and inflationary pressure that complicates Federal Reserve policy. The strategic lesson is clear: deterrence, not diplomacy, is the only reliable tool for keeping Hormuz open when dealing with a regime that uses energy chokepoints as instruments of coercion. Gulf Arab producers are diversifying export routes precisely because they understand that Iranian threats can't be negotiated away.