- Lead. Brent crude futures rose 5.2% on Wednesday to settle at $78.02 per barrel—briefly topping $80 intraday—on fresh US military strikes against Iran and the US Treasury’s decision to revoke the oil sanctions waiver it had extended under the now-collapsed ceasefire.
- Fact. West Texas Intermediate also surged 4.4% to $73.52, while the XLE energy sector ETF jumped more than 2%, led by Diamondback Energy, Occidental Petroleum, and Valero Energy.
- Stake. President Trump warned of potential strikes on Kharg Island, Iran’s principal crude oil export hub, which handles roughly 90% of Iranian oil exports. A strike on the terminal would be the most consequential single blow to global oil supply since Iraq’s invasion of Kuwait in 1990.
Oil markets moved sharply on Wednesday as the military exchange between the United States and Iran entered a second consecutive day. US forces struck more than 80 Iranian targets overnight, responding to the previous day’s Iranian attacks on a Qatari LNG carrier and two oil tankers transiting the Strait of Hormuz. The Joint Maritime Information Center, which coordinates shipping safety information across the region, raised its threat assessment for vessels using the waterway to “severe,” the highest level, and warned that further hostile action by Iran was likely.
The decisive market jolt came in two stages. First, Trump declared the ceasefire memorandum “over” at a NATO summit press conference in Ankara, removing the diplomatic floor from oil prices. Then, the US Treasury Department revoked the sanctions waiver it had issued to allow Tehran to export crude under the interim deal—the same waiver that had sent Brent 3.5% lower when it was first announced. Traders interpreted the revocation as removing Iranian barrels from the global market and signaling a willingness to escalate economically as well as militarily.
The Kharg Island variable
The single factor that pushed Brent briefly above $80—its highest level in weeks—was Trump’s public statement that further US strikes could target Iran’s civilian energy infrastructure, including “electric plants, desalination plants” and Kharg Island specifically. The island’s export terminal handles the overwhelming majority of Iranian crude leaving the country; any physical damage to its loading infrastructure would remove up to 1.7 million barrels per day from global supply almost immediately.
Gregory Brew, an analyst at Eurasia Group, told reporters that “this skirmishing is really driven by ambiguity in the MOU,” referring to the memorandum of understanding that had governed the ceasefire since it took effect. He predicted more violence but stopped short of forecasting a return to full-scale conflict. Iran, for its part, threatened to close the strait entirely—a step that would disrupt roughly 20% of global seaborne oil trade daily and send prices well above the $80 level tested on Wednesday.
Broader market reactions
The oil surge did not lift broader equities. The Dow Jones Industrial Average fell 488 points during Wednesday’s session as investors weighed the inflationary implications of higher energy costs against already-elevated US inflation data. Treasury yields moved modestly higher. Gold edged up as a safe-haven asset.
The AI-related trade proved more resilient. Chip and infrastructure names held ground as investors focused on data center demand as a sector insulated from the Iran conflict. SpaceX shares, which had sold off sharply earlier in the week, partially recovered. But the dominant story in markets on July 8 was oil, with the energy sector the only clear beneficiary in an otherwise defensive session.