Iran–Gulf developments — 25 October 2026
The strait stayed contested, not closed. Two tankers were struck in it off Musandam on 21 and 22 October, and a third was reported hit in the far northern Gulf. Iran's Revolutionary Guard claimed nine more, and a US military spokesperson called its mine claims incorrect; neither is a count. UKMTO put combined transits about 70 per cent below pre-war for a second week, while analysts described crude volumes near pre-war levels, moved by shuttle and transfer. Volume is not access: no cover was found written and no régime agreed. The Makkah Agreement's text became public through Türkiye's ratification bill. It obliges assistance against an attack by another state, each party setting its own support, and Türkiye's defence minister ruled out fighting the Houthis. Strikes killed four people in Saudi Arabia's Eastern Province, two at Dammam's airport, which the Houthis said they targeted, and two from drone debris at Shaybah, and the United States ordered its non-emergency staff out of the kingdom. Nothing between Washington and Tehran is in force. The IAEA's pages could not be read, and verification access was not reviewed.
The developments
Two tankers were struck in the strait, Iran claimed nine more, and transits stayed about 70 per cent below pre-war
At about 0145 UTC on 21 October a Kuwait-flagged crude tanker was struck by an unknown projectile 11 nautical miles west of Bukha, Oman. The fire was put out, the ship anchored awaiting assistance, and the crew were safe (UKMTO 179-26). At about 1715 UTC on 22 October an outbound tanker was hit 7 nautical miles north-east of Limah and continued its voyage (UKMTO 181-26, a time-late report). UKMTO and EUNAVFOR's maritime security centre, MSCIO, both place the two strikes in the Strait of Hormuz. On 20 October the products tanker SOYIA reported explosions and falling debris during a ship-to-ship transfer about 30 nautical miles south-east of Al Faw, Iraq, with no significant damage. The Revolutionary Guard navy said seven tankers were attacked or hit mines overnight into 22 October, and on 23 October that two supertankers struck mines. It named no vessel or place. A Central Command spokesperson, unnamed, called the mine claims incorrect and said the lanes were clear. President Trump called them "fake hits". UKMTO's weekly overview of 23 October counts 241 combined transits in the week to 21 October, against 254 the week before, about 70 per cent below pre-conflict levels. AIS-visible transits rose to 47 from 42, and most ships broadcasting AIS still route through Iranian waters. Since 6 July, 57 of 79 projectile strikes were on the southern route. Analysts quoted by The National put Gulf crude flows close to pre-conflict levels, at elevated shipping rates. On 21 October France's President said transport costs had been multiplied by ten and too few ships were insured, and proposed structuring a guarantee mechanism with the region's large funds.
Why it matters. The physical contest went on. Both placed strikes were on the Omani side, the southern route on which UKMTO's own tally puts most projectile strikes since July. The week's sharpest divergence is between volume and access. Crude is reported near pre-war levels because shuttle tankers move it to transfer points, while the count of ships crossing stays about 70 per cent down and freight is ten times dearer. More barrels through fewer, costlier crossings is not a return of commercial use. Cover moved from complaint to proposal. A guarantee mechanism proposed to Gulf funds is not cover written, and no club or charterer was found writing it. The item does not establish who fired on any vessel. No party claimed the two placed strikes. Iran's nine-tanker claim and the US denial are both statements, and the series counts neither.
Türkiye's parliament lists the bill approving the Makkah Agreement for Joint Defence as 2/3961. It was received on 21 October and referred to the National Defence and Foreign Affairs commissions, and the Foreign Affairs Commission put it on its agenda for 27 October. The sixteen-article text sent with the bill was published in Turkish by Medyascope on 20 October and in English by The National on 21 October. The National said a Turkish parliamentary source and a Pakistani official confirmed it. Article 2 treats any external armed attack on a party as an attack on all. In case of an armed attack or military aggression against a party "by another country or a group of countries", the others are to assist it immediately, each deciding the extent and nature of its support after assessing what is needed, under Article 51 of the UN Charter. Article 8 sets up the Strategic Political and Defence Committee and a Secretariat in Saudi Arabia, and admits new members only by consensus of the core parties. Under Article 16 the agreement enters into force on the last deposit of ratification and remains in force indefinitely; a party may withdraw after ten years from its entry into force, on at least three months' written notice. On 23 October Defence Minister Yaşar Güler said Türkiye did not envisage entering any clashes with the Houthis, and would set the scope of any support to Saudi Arabia once parliament had ratified.
Why it matters. The record's standing reservation was that the text was not public. It now is, through a parliamentary process, and what it shows is a commitment with discretion built in: an obligation to assist whose form each party decides for itself. The trigger names states. The Houthi movement is not a state, and the attacks on Saudi Arabia that tested the Agreement in September and October are its attacks. Nothing in the text read says the obligation reaches them, and the Turkish defence minister's statement points the other way. Ankara keeps the Agreement and declines a war. Publication is not ratification, and ratification is not a procedure. No protocol, threshold, invocation or contribution named under the Agreement followed. The observable that would change the reading is a signatory stating that an attack meets Article 2, or naming a force as provided under it.
On the evening of 21 October a strike on King Fahd International Airport in Dammam halted operations from about 2315 local time. Saudi Arabia's civil aviation authority first reported one killed and eight injured, then two killed. The movement said it had targeted the airport. The same day, by the energy ministry's account, air defences intercepted a drone aimed at a facility at Aramco's Shaybah field. Its debris set a contractor's vehicle alight outside the perimeter, killing two foreign workers and injuring two, and operations were not affected. The ministry did not say who launched it. The movement also claimed strikes on the Defence Ministry in Riyadh, an Aramco site at Yanbu and Abha airport. Riyadh was hit again on 24 October. The State Department ordered non-emergency US government staff and their families to leave Saudi Arabia, citing increased Houthi hostilities, and later issued travel advisories for 13 countries. On 23 October the foreign ministers of eight states meeting in Istanbul, among them the United Kingdom, France, Germany and Italy, condemned the Houthi escalation and urged the movement to stop its attacks.
Why it matters. The fire moved east. Dammam and Shaybah sit in the Eastern Province, the kingdom's oil heartland on the Gulf side, far from the Yemeni border, and both strikes there were deadly. Shaybah was reached by interception, and its operations did not stop, so the energy series records reach and not effect. The structure did not change. There is no channel between Riyadh and Sanaa, no truce and no external strike on the movement, and no Saudi strike in Yemen was reported with a place and a date. The ordered departure is a precaution by Washington, not an instrument, and the Istanbul condemnation is a statement. Neither invokes any defence arrangement.
On 21 October France and Qatar declared in Doha that freedom of navigation in the Strait of Hormuz must be restored "without constraints or fees". On 23 October the eight foreign ministers in Istanbul condemned attacks on shipping in the Red Sea and Bab el-Mandeb, and the four regional states among them backed the Islamabad memorandum of June and demanded unrestricted passage through Hormuz. Iran's terms, as reported, are a return to the June memorandum and US recognition of a temporary transit arrangement between Iran and Oman. Al Jazeera reported on 24 October that mediated negotiations between Iran and the United States were no closer to results; France's President said different channels of negotiation exist between the two. On 21 October the US Treasury designated Iran-related shipping companies and vessels under Executive Order 13902 and issued wind-down General Licenses GG and HH.
Why it matters. Positions on the strait's legal status are now stated from two sides: Gulf, regional and European governments for unrestricted passage without fees, Iran for a transit arrangement with Oman that Washington would recognise. Neither is accepted by more than one riparian, which is what a régime would need. Between Washington and Tehran there are signals and no text. The designations act under existing authority and change no instrument.
Where this fits
This is one conflict's dated review for the week. The cross-conflict edition for the same week carries the most consequential findings from every conflict Vigil covers. The standing picture this review updates is the Iran–Gulf coverage. How Vigil grades, dates and sources its claims is set out in the methodology, and anything later found wrong is recorded in the corrections log.
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