Oil Prices Surge Over 7% After US Declares Iran Ceasefire Void

Oil markets jumped sharply on Wednesday following President Donald Trump’s announcement that the interim cease‑fire with Iran had ended, sending Brent crude above $79 a barrel and U.S. West Texas Intermediate (WTI) past $75. The price spikes represent the steepest one‑day gains in nearly two months and reflect heightened geopolitical risk after Iran attacked commercial vessels in the Strait of Hormuz.

Iran’s attacks on three tankers transiting the strategic waterway on Tuesday triggered a U.S. military response. According to U.S. Central Command, American forces launched a large‑scale air campaign that struck more than 80 Iranian military targets, employing precision‑guided weapons and 5,000‑pound deep‑penetrator bombs against sites on Qeshm Island, Sirik and the port city of Bandar Abbas. The Iranian Khatam al‑Anbiya Central Headquarters subsequently announced the closure of the Strait of Hormuz to commercial shipping, warning that any further attempts to transit would meet direct military intervention.

The escalation coincided with the U.S. revoking a temporary sanctions waiver that had permitted Iran to sell oil and petrochemicals, cutting a vital source of revenue for Tehran. The combination of renewed hostilities, the loss of the waiver and the threat to a key maritime chokepoint pushed Brent up 7.6% to $79.76 per barrel at 10:40 a.m. ET, while August‑delivery WTI rose 7.2% to $75.40.

Data from ship‑tracking services indicate that at least four oil and gas tankers have already turned back from attempting to cross the strait, underscoring the rapid shift in risk perception among shippers. Jorge León, head of geopolitical analysis at Rystad Energy, said tanker traffic “has essentially stopped,” a situation that reflects market sentiment more than any official statement from Washington or Tehran.

The price rally also reverberated through other financial markets. In the United Kingdom, short‑dated government bonds suffered their worst day since March, with the two‑year gilt yield climbing 15 basis points to 4.35%. The move priced in a likely Bank of England rate hike in November and left a 50% probability of an additional increase in December. Meanwhile, the FTSE 100 fell nearly 1.7%, its biggest single‑day decline since May, although energy majors BP and Shell bucked the trend, gaining 3.5% and 2.2% respectively as higher oil prices boosted their earnings outlooks.

European gas markets reacted similarly. The Dutch benchmark for gas rose more than €2.40 to €49 per megawatt hour, while the UK’s contract increased by 6 pence to 116.75 pence per therm, reflecting concerns that tighter oil supplies could lift broader energy costs. Analysts warned that the surge could translate into higher household bills, especially as summer energy prices have already risen sharply.

Despite the sharp rally, most analysts cautioned against assuming oil will return to the $110‑plus levels seen in late May. Tamas Varga of PVM Oil Associates noted that the market has demonstrated resilience, pointing to a $56 decline in Brent during May and June and the ability of Gulf producers to mitigate supply disruptions through alternative routes and clandestine vessel crossings. Initial estimates of a 20 million‑barrel‑per‑day loss from a full Hormuz blockade have been revised downward; actual net reductions are now thought to be around 3.1 million barrels per day after accounting for increased output from unaffected producers, emergency stock releases and U.S. sanctions waivers covering Russian and Iranian oil in floating storage.

The immediate impact on investors is a heightened focus on energy‑related equities and commodities. The sharp rise in crude prices has already lifted the shares of major oil companies, while the volatility in bond yields suggests that fixed‑income investors may need to reassess duration risk in the face of potential central‑bank policy shifts. For traders, the suspension of tanker traffic through Hormuz may prompt a reallocation toward alternative supply sources such as West Africa, the United States and Latin America, as refiners scramble to secure cargoes amid the heightened risk premium demanded by shipowners.

Overall, the termination of the Iran‑U.S. cease‑fire has reignited geopolitical tension in a region that supplies roughly 20 million barrels of oil daily. While markets have absorbed some of the supply shock through alternative logistics and higher production elsewhere, the prospect of a prolonged closure of the Strait of Hormuz remains a key risk factor for global energy stability and could keep oil prices elevated in the near term.