IN 30 SECONDS
- What happened? The Pentagon has announced the opening of a safe navigation lane in the Strait of Hormuz despite the confirmed presence of Iranian naval mines.
- Who is behind it? The guarantee comes from United States Defense Secretary Pete Hegseth, and it is framed within the Operation Freedom of the U.S. Central Command.
- What impact does it have? The Brent crude price has plummeted by 10% in the last hours amid expectations of a rapid de-escalation along the world’s main artery of energy trade.
The White House has moved. United States Defense Secretary Pete Hegseth guaranteed this Tuesday the maritime transit through the Strait of Hormuz, barely twenty-four hours after the U.S. Central Command Naval Forces (NAVCENT) issued an urgent alert due to the detection of undrained naval mines. The official confirmation arrives at a moment of extreme fragility: the nearly four-week ceasefire between Washington and Tehran hangs by a thread and the global economy holds its breath.
Hegseth’s verbal guarantee comes as Brent falls 10% in international markets. The price of the European benchmark crude stood in the $78 range at the close of this edition, its lowest level since before the hostilities began. The selling pressure reflects a clear market reading: if there is a safe channel, the risk of supply disruption is dramatically reduced.
What lies behind the lane: mine-sweepers, destroyers and an exclusion zone
The initial NAVCENT warning, issued on Monday, was unequivocal. “Transit within the traffic separation scheme or in its vicinity should be considered extremely dangerous due to the presence of mines that have not been fully inspected or mitigated,” the memorandum read. The two routes through the strait that had thus far been considered secure effectively fell under suspicion. To prevent accidents, the Pentagon has drawn an expanded safety zone to the south of the separation scheme, within Omani territorial waters, and has asked ships to coordinate their passage with the authorities of Oman.
The mine warfare capabilities deployed on the ground are limited. The U.S. Navy last year removed the final four mine countermeasures ships based in Bahrain, the only ones it maintained in the Middle East. The remaining four of the Avenger class are assigned to Japan and, according to Chief of Naval Operations Admiral Daryl Caudle, two of them were en route toward the Central Command area of responsibility on April 20. However, they have not yet arrived. The current coverage depends on the Independence-class littoral combat ships and the Arleigh Burke-class destroyers assigned to the operation.
The U.S. Navy began the blockade of the strait on April 12, hours after former President Trump announced on Truth Social that he would intercept any vessel that had paid tolls to Iran. Since then, CENTCOM forces have destroyed several Iranian vessels, as well as cruise missiles and drones. Iran, for its part, is estimated to possess about 6,000 naval mines, according to Congressional data. The disparity between threat and means is considerable.
The Pentagon guarantee calms the markets, but the Strait of Hormuz remains a minefield in the literal sense of the term.
The market breathes: Brent contracts sharply
In the London and New York trading sessions, the news has translated into a wave of selling. The Brent barrel, which had touched near $92 after the blockade was imposed, has shed 10% in just 48 hours. The futures curve shows a pronounced drop in the near-term maturities, signaling traders expect a rapid normalization of tanker traffic. “The market is pricing in the credibility of the American umbrella,” energy sector sources told Merca2.es. “If Washington can guarantee a stable passage, the geopolitical risk premium evaporates.”
The Strait of Hormuz channels around 20% of world crude and refined products traffic. Any prolonged disruption immediately triggers alarms in Brussels, Beijing, Tokyo and, of course, Madrid. Spain imports about 12% of its oil from the Middle East, a dependency that makes the national economy particularly sensitive to Gulf incidents. Brent’s drop therefore eases pressure on fuel prices and on core inflation at a moment when European recovery remains unsolidified.
However, volatility remains extreme. The ceasefire between the United States and Iran remains in place yet fragile: in recent days there has been an artillery exchange that destroyed six Iranian fast boats and several attack drones. Intelligence analysts warn that Tehran could be using the truce to reposition assets and mine networks.
Power Balance
The strategic reading of this move goes beyond Brent’s immediate situation. What we are witnessing is a pattern in which Washington uses naval deterrence as a tool for global economic stabilization. By guaranteeing a safe lane without initiating a large-scale sweep operation — for which, at the moment, it does not have sufficient means in the area — the Hegseth-led Pentagon prioritizes signaling to the market over decisive military action. The message is: freedom of navigation remains, even though the threat persists. It is a politically calculated decision: stabilizing crude prices benefits a Trump administration facing internal inflationary pressures and a looming reelection campaign.
For the European Union, the situation provides relief, but also another warning about its energy vulnerability. The dependence on sea routes militarily controlled by the United States is once again evident. Brussels lacks an expeditionary naval force capable of guaranteeing Gulf security on its own, and the Aspides Operation in the Red Sea has demonstrated Europe’s limitations in this field. Spain, with the Rota Naval Base as a strategic hub of American projection, is once again at the logistical center, but without sovereign decision-making capacity over the doctrine of deployment.
The immediate risk is twofold. First, Iran could interpret the lane opening as an opportunity to mine adjacent zones and provoke an incident that escalates beyond diplomatic control. Second, the pressure on Oman, which becomes a key actor by hosting the safe route within its territorial waters and which will have to manage dense traffic without the capacity to respond to a pollution or sabotage crisis. In either scenario, Brent would surge again. The current calm is real, but it rests on an extraordinarily precarious balance of power.
The precedent of the Operation Earnest Will (1987-1988), in which the U.S. Navy escorted Kuwaiti oil tankers under a flag of convenience during the Iran-Iraq War, offers an uncomfortable mirror. Then, an Iranian mine nearly sank the frigate USS Samuel B. Roberts and triggered the largest surface naval battle since 1945. History does not repeat itself, but it often rhymes in the Persian Gulf. The next key date is the United Nations Security Council meeting on May 12, where compliance with the ceasefire will be reviewed. Until then, the international community holds its breath.
