Since May, the U.S. military has played a pivotal role in facilitating the transit of oil tankers through the Strait of Hormuz amid ongoing hostilities involving Iran. This operation has enabled millions of barrels of crude to move through the strategically vital waterway, helping to stabilize global oil markets that had been severely disrupted earlier in the conflict.

Prior to the outbreak of war, approximately 15 million barrels of crude oil passed daily through the strait, a key chokepoint connecting the Persian Gulf with the open ocean. In recent months, however, the volume has declined sharply due to frequent Iranian attacks on shipping vessels, leading to a significant reduction in oil exports. By July, tankers navigating routes under U.S. military protection along the southern corridor of the strait—near the coast of Oman—were transporting about five million barrels daily, according to maritime analysts.

The U.S. military’s involvement consists of escorting these vessels through the southern segment of the strait, where Iranian forces exert control over the opposite side near their coastline. The U.S. Central Command employs an array of defensive measures, including the use of naval vessels, helicopters, and aircraft equipped to intercept Iranian missile and drone attacks. The military also coordinates closely with ship operators, who register planned transits and report threats or incidents in real time. Since May, more than 1,000 ships have been safeguarded under this initiative.

Despite these efforts, the southern corridor remains a perilous passage. At least 15 vessels using this route have been attacked since early June, resulting in 16 injuries and three deaths among mariners, according to United Nations data and statements from British maritime authorities. Iran has consistently opposed the U.S. presence and demands permanent control over navigation in the strait, a shift from pre-war arrangements.

The situation remains volatile, with the Iranian military retaining the capability to escalate attacks on shipping and energy infrastructure throughout the region. Analysts caution that the threat to maritime traffic will persist as long as the conflict continues. Many major shipping companies have opted to avoid the strait altogether until a cease-fire is declared.

Alongside escorting tankers, the U.S. Navy continues to enforce a blockade of Iranian port access, which has severely limited Tehran’s ability to export oil, thereby constraining its revenue. This dual approach aims to weaken Iran’s hold on regional waters while preventing spikes in global oil prices by enabling continued flow from Gulf producers.

Key regional players have also engaged in navigating the security challenges. The Abu Dhabi National Oil Company (ADNOC), owned by the United Arab Emirates, reported that 18 of its vessels have been attacked during the conflict, resulting in one fatality and multiple injuries. ADNOC stated it has implemented extensive security measures to safeguard its crews and assets. Similarly, some private shipping operators, including Greece-based Dynacom, have continued to use the southern corridor despite risks; two Dynacom tankers were struck on July 19, one sustaining damage severe enough to be abandoned.

The operational logistics underpinning the U.S. naval escorts have been complicated by the destruction of a key base in Manama, Bahrain, early in the conflict. Resupply missions must now be conducted from Diego Garcia, a remote British island in the Indian Ocean, extending turnaround times for support vessels. The U.S. Navy currently maintains roughly 20 warships in the Gulf of Oman, including the aircraft carriers Abraham Lincoln and George H.W. Bush, alongside several destroyers tasked with both escort duties and enforcing the naval blockade.

Overall, the U.S.-led protection of oil shipments through the southern corridor of the Strait of Hormuz marks a significant effort to preserve regional energy exports and mitigate the broader economic impact of the ongoing conflict. However, the stability of these operations remains contingent on continued military commitment and the resolution of tensions with Iran.