DUBAI — Six ships moved through the Strait of Hormuz on Wednesday morning, compared with the roughly 85 that would normally cross in a day. The figure — less than 8% of typical traffic — captures the scale of the disruption after the United States destroyed five Iranian oil tankers and Iran retaliated by attacking 10 commercial vessels near the strait and launching 20 ballistic missiles at a Jordanian air base hosting U.S. forces.
The exchange marked the sharpest one-day escalation on the maritime front of a war fought largely from the air since June 2025. By striking civilian shipping and a military installation in Jordan at the same time, Tehran signaled its willingness to spread the conflict’s costs beyond Iran’s borders and into the waterways carrying roughly one-third of the world’s seaborne crude.
U.S. Central Command said Wednesday that American forces destroyed five Iranian tankers on September 8: the M/T Kaviz, M/T Charminar, M/T Horizon 1, and M/T Riesco in the Gulf of Oman, and the M/T Derya near Iran’s Kharg Island. The strikes followed two ballistic-missile attacks by the Islamic Revolutionary Guard Corps on a U.S. Navy warship over the previous two days. CENTCOM said the warship avoided both attacks and that no American personnel were injured.
Crews aboard the Iranian vessels were ordered to abandon ship before the strikes, according to the command. Tanker-tracking firm TankerTrackers.com estimated that the five tankers had transported approximately 45 million barrels of crude before they were destroyed.
Iran’s response came in two simultaneous directions. The IRGC declared it had attacked ten commercial ships in waters near the Strait of Hormuz, the largest single declared wave of shipping attacks by either side in the war, and fired twenty ballistic missiles at Muwaffaq Salti Air Base in Al-Azraq, Jordan. Jordanian and American air defenses intercepted eighteen of the twenty projectiles; the two that were not intercepted fell in unpopulated desert areas without causing casualties. Jordan’s military confirmed the attack and said the base remained operational.
The choice of Jordan as a target carried weight beyond the missile count. Muwaffaq Salti has hosted American forces for years and has served as a staging and air defense platform for US operations throughout the current war. Earlier Iranian strikes against Jordan and the UAE in August targeted drone staging sites with smaller munitions; the use of ballistic missiles against a base hosting American personnel was a deliberate and legible escalation of those earlier attacks. The message to Amman and to the Gulf states that have permitted similar arrangements was that hosting Washington’s military campaign comes with costs Tehran is now openly prepared to collect.
Six ships transiting Hormuz against a daily average of eighty-five is not a managed restriction. It is, by any practical measure, a functional shutdown. The United Kingdom Maritime Trade Operations reported that several merchant vessels in the northern Gulf and Gulf of Oman sustained disabling fire overnight, confirming that Iran’s declared ten-ship operation was not a statement made for diplomatic effect but a coordinated campaign with real consequences for crews, cargo, and the companies that insure them.
The American position frames the tanker strikes as sanctions enforcement: the vessels being destroyed, Washington argues, were carrying crude in violation of the sanctions regime that predates the war. Tehran has rejected that framing entirely, describing the naval campaign as an illegal blockade designed to strangle the Iranian economy. What is not disputed by either side is that five Iranian ships, each carrying Iranian oil, are now on the floor of the Gulf of Oman and the northern Persian Gulf.
The war’s naval dimension had shown signs of informal restraint as recently as mid-August, when both sides appeared to observe a pause on attacks in the strait. That pause unraveled. The breakdown coincided with CENTCOM’s resumption of tanker strikes, which began earlier in September and escalated with Wednesday’s five-vessel operation. Each cycle of strikes has produced a larger Iranian response than the last, and September 8 follows that pattern without interrupting it.
That trajectory now runs alongside a diplomatic axis of pressure. The IAEA’s board voted Wednesday in Vienna to refer Iran’s nuclear file to the UN Security Council for the first time in twenty years, adding a third simultaneous front to a conflict that Tehran is now fighting at sea, from the air, and before international institutions whose authority it formally recognizes but has progressively tested.
The communities most immediately affected by Hormuz’s near-closure are not in Washington or Tehran. Japan, South Korea, and India draw a disproportionate share of their energy from the strait; no alternative supply arrangement fully substitutes for what the waterway normally moves in a day. A disruption sustained beyond a matter of days begins feeding through to manufacturing and energy costs across Asia within weeks.
President Trump said on Tuesday that the war would be over by the November midterm elections. His administration has not explained the mechanism by which that would happen. Wednesday did not square easily with that timeline. Five tankers were destroyed, ten ships struck, a Jordanian base absorbed twenty missiles, and Hormuz was running at less than one vessel in twelve of its normal count. The military stockpile concerns Vice President Vance raised with commanders this week add a further dimension to a conflict that has, in the space of one day, acquired several new ones.
