Iran's Islamic Revolutionary Guard Corps has claimed that two more supertankers struck naval mines in the Strait of Hormuz, according to Sunday's morning brief on the Gulf crisis. The claim remains unverified, and no independent damage assessment or vessel identification has been published alongside it. Iranian media also rejected reports that Tehran had made any offer to the United States or sent a proposal to a Pakistani mediator on reopening the strait.

The numbers that do not match

The morning brief highlights a striking gap in the shipping picture. The International Monetary Fund's PortWatch recorded four transits through the strait on 18 October, against a pre-crisis baseline of roughly 85 a day. Treasury Secretary Scott Bessent, by contrast, has said Persian Gulf oil exports have surpassed pre-war levels. Both can be true only if oil is leaving by another route, and the brief points to Yanbu on the Red Sea, which has let Saudi Arabia bypass the blockade for much of its crude. On that reading, the strait is effectively shut for normal traffic, and the oil is going around it.

Why tankers are the target

That bypass is also why Houthi strikes on Saudi targets matter: hitting the alternative route is cheaper for Tehran's proxies than hitting the strait again, the brief argues. Saudi Arabia has issued safety warnings for Riyadh and other regions as Houthi cross-border strikes continue, although there is no independent damage assessment yet for the latest strikes. Last week's attack on Riyadh's King Khalid airport was described as the heaviest of the campaign so far.

Readers should keep the mine claim in its proper box: it is an Iranian claim, reported as such, not a confirmed incident. What to watch next is a US Central Command statement on the mine claims, any further embassy drawdowns, and whether Washington's language about a possible operation turns into a date.