UN pauses Strait of Hormuz evacuation after vessel struck; Iran asserts control

A United Nations effort to move stranded ships through one of the world's most critical waterways ground to a halt on Thursday after a vessel was struck by a projectile near Oman. The attack came just hours after Iran had warned foreign ships to stop transiting the Strait of Hormuz without Tehran's explicit permission, and it exposed the fragility of a tentative arrangement meant to ease one of the war's most destabilizing economic pressures.

The vessel that was hit sustained damage but reported no injuries or environmental harm, according to the United Kingdom Maritime Trade Operations centre. It was not part of the UN evacuation effort itself. The identity of whoever fired the projectile remained unclear, but the timing left little doubt about the message Iran was sending. Arsenio Dominguez, secretary-general of the International Maritime Organization, announced that the evacuation plan would remain suspended until the agency could secure firm safety guarantees for the ships waiting to pass through the strait and those already attempting the journey.

What made the strike particularly significant was what it targeted: not the evacuation convoy itself, but the principle behind it. Last week, the United States and Iran had signed a memorandum of understanding committing to a 60-day negotiation period on an interim peace deal. Part of that framework involved opening an alternative shipping corridor through the strait, one designed by Oman and the International Maritime Organization. This route ran closer to the Omani coast, skirting the central passage that Iran had mined after U.S. and Israeli strikes on Iranian positions in late February. The new corridor represented a way to move oil and goods without giving Iran the leverage it had accumulated by controlling access to the traditional shipping lanes.

Iran's response was swift and unambiguous. A newly established government body called the Persian Gulf Strait Authority declared on social media that any vessel using routes outside Iran's designated passages would receive no guarantee of safe passage. The Revolutionary Guard's naval arm went further, issuing a statement carried by state media calling the UN-backed route "unacceptable and completely dangerous" and warning that "violators will be dealt with." On Wednesday, before the projectile strike, a Revolutionary Guard soldier had radioed a tanker with a direct threat: "You are in range of my missiles and maybe (I) fire on you."

Yet the alternative route had already begun to function. Early Thursday, tankers including the Stoic Warrior had successfully passed through, and the container ship Maersk Baltimore and another chartered vessel had made it out of the Persian Gulf. Traffic through the strait was climbing—125 vessels crossed in the previous week, up from 33 the week before, according to Lloyd's List Intelligence. Wednesday had seen 78 transits, the highest single day since the war began, though still well below the pre-war daily average of 130 or more. Oil prices briefly dipped below $73 per barrel on Thursday, suggesting that markets believed the situation was stabilizing despite the attack.

U.S. Secretary of State Marco Rubio was in the Gulf region when the strike occurred, meeting with foreign ministers from the six-nation Gulf Cooperation Council to reassure them that any agreement with Iran would not compromise their security or economic interests. "If that stops, then we're going to have a problem," Rubio said of the new shipping route, making clear that Washington viewed the corridor as non-negotiable. Bahrain's foreign minister acknowledged that the agreement offered hope but stressed the critical importance of Iran honoring its commitments.

The standoff reflected the deeper fragility of the emerging peace framework. The U.S. and Iran remain at odds over multiple issues, including the mechanics of shipping through the strait and the future of Iran's stockpile of highly enriched uranium. Both sides have conducted their negotiations partly in public, with Trump and Iranian leaders trading threats and claiming victories the other denies. Meanwhile, a ceasefire between Israel and the Iranian-backed Hezbollah in Lebanon showed signs of cracking, with Israeli strikes killing at least three people over two days and raising questions about whether the wider truce could hold.

The pause in the UN evacuation effort was not a collapse—ships were still moving through the strait, and the alternative route remained open. But it was a reminder that Iran retains the ability to disrupt one of the world's most vital economic arteries, and that any lasting resolution will require more than a signed memorandum. The next 60 days will determine whether the corridor becomes a permanent fixture or whether Iran's threats prove sufficient to reassert control.