Renewed Risks in the Strait of Hormuz Raise Uncertainty Over Global Energy Supplies

[Chart 1: United States and Iran Illustration]

The United States has abruptly revoked temporary sanctions waivers that previously allowed certain transactions involving Iranian oil sales, reigniting market concerns over crude supply risks in the Middle East.

On July 7 (U.S. Eastern Time), the Office of Foreign Assets Control (OFAC) of the U.S. Treasury Department announced that no new covered transactions may be initiated after July 7, while wind-down activities will be permitted until 12:00 a.m. on July 17. The 60-day general license, originally issued under the temporary U.S.-Iran peace understanding and scheduled to remain effective until August 21, had provided a pathway for the gradual recovery of Iranian oil exports. The policy reversal is widely viewed as a direct response to recent attacks on commercial vessels near the Strait of Hormuz.

According to U.S. Central Command, American forces have carried out a series of significant military strikes against Iranian targets in response to attacks on merchant ships operating in international waterways. U.S. officials accused Iran of clearly violating the ceasefire agreement. Iranian media reported explosions in several southern port cities, including Sirik. While Tehran has not formally responded to the sanctions reversal, Mohsen Rezaei, an adviser to Irans Supreme Leader, stated that Washington is attempting to derail ongoing negotiations.

The move effectively overturns a key provision of the temporary agreement reached between the two countries last month. During the waiver period, Iran had actively resumed crude exports, improving expectations for global oil supply and boosting market confidence. The cancellation of the waiver significantly weakens expectations for Iranian supply growth and has prompted oil markets to once again price in the risk of supply disruptions.

Following the announcement, international oil prices surged during late U.S. trading hours. West Texas Intermediate (WTI) crude briefly climbed to $72.51 per barrel, up nearly 5.8%, while Brent crude reached $76.36 per barrel, gaining approximately 6.1%. The U.S. Dollar Index (DXY) strengthened above 101.10, while spot gold fell below $4,100 per ounce and silver extended losses to nearly 4.2%.

Recent tanker attacks near the Strait of Hormuz served as the immediate catalyst for Washingtons decision. U.S. officials alleged that Iran opened fire on three commercial vessels in recent days, describing the actions as “completely unacceptable.” Given that the Strait of Hormuz handles roughly one-fifth of global oil shipments, any disruption to maritime traffic can rapidly increase the geopolitical risk premium embedded in energy prices.

Analysts note that while renewed U.S. sanctions are likely to constrain Iranian exports in the near term, the sustainability of higher oil prices will largely depend on whether security conditions in the Strait continue to deteriorate.

Iran, meanwhile, has reiterated that safe passage through the Strait cannot be guaranteed without Iranian coordination. Tehran has previously indicated that it intends to implement new navigation requirements and potentially impose transit fees, a position that remains fundamentally at odds with Washingtons longstanding stance that maritime passage through the waterway should remain permanently free and unrestricted.

The U.S. decision to revoke sanctions waivers on Iranian oil marks a significant setback for the implementation of the temporary U.S.-Iran agreement. Renewed security concerns surrounding the Strait of Hormuz are once again becoming a dominant driver of global energy market sentiment.

In the short term, expectations of potential supply disruptions are supporting oil prices and benefiting energy-related sectors. However, rising crude prices could also intensify global inflationary pressures and contribute to heightened volatility across financial markets.

Looking further ahead, lasting stability in the Middle East energy landscape will likely require a return to productive U.S.-Iran negotiations, secure and uninterrupted navigation through the Strait of Hormuz, and meaningful progress on nuclear-related issues. For now, geopolitical risk premiums are climbing once again, and investors should closely monitor shipping volumes through the Strait, the trajectory of Iranian oil exports, and future diplomatic developments.

Global energy markets have re-entered a phase where geopolitical considerations dominate trading dynamics, with supply risks and policy uncertainty remaining key factors shaping market direction.

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