The IRGC claimed seven "violating" tankers were struck or mined overnight near Hormuz. The Houthis claimed hits on Riyadh's Defence Ministry, Aramco Yanbu and two airports, and Reuters reported Aramco evacuated its Dhahran headquarters for the first time in the war. No independent maritime authority has confirmed the tanker attacks, which President Trump called fabricated. Brent settled at $113.17, up 4% to a five-month high, Reuters reported.
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What did the IRGC claim in the Gulf?
The IRGC Navy said four vessels doing ship-to-ship transfers in the north-central Gulf were struck and set ablaze, and three more hit mines west of the Strait. Fars and Tasnim carried the claim, and Reuters and Al Arabiya relayed it: the claim is cross-bloc reported, but the event is not verified.
There is no UKMTO confirmation despite circulating videos. Single-source 21 Oct imagery of a smoking vessel off Sohar has no established link to the claim.
Fars and Aja News said the vessels were US-owned or carried US cargo (unverified). Fars also reported a new explosion near earlier interdiction sites (single-source).
How is Tehran escalating?
The IRGC said US encouragement of transits through an "illegal mined route" would extend confrontation to US regional bases.
Army chief Hatami called the blockade an act of war. An Iranian official told Al-Mayadeen that prior restraints "will no longer apply" (single-source).
Iranian state TV showed an "Arash" drone variant with a claimed payload increase from 10kg to 100kg. The footage is genuine; the figures are unverified.
What is Washington signalling?
CENTCOM's Brad Cooper marked 100 days of blockade, claiming at least $25bn of Iranian crude denied. Treasury Secretary Bessent said no tankers are loading at Kharg.
Trump said "we are not negotiating with Iran" and "maybe we'll hit them a little more."
His claim that more oil now transits Hormuz than before the war is contested and probably wrong, given earlier WSJ/Kpler data showing reduced flows.
Is a strike being prepared?
NYT reported a roughly 72-hour campaign planned for after the 3 Nov midterms, targeting nuclear sites including Kuh-e Kalang, with no final authorisation. CNN called the plans "ready pending approval." The Atlantic said no decision has been made. All three rely on anonymous officials.
Israel Hayom confirmed Israeli armed sorties toward the Iranian border, including one on 10 Oct, consistent with Barak Ravid of Axios's earlier reporting.
The State Department confirmed an ordered departure of non-emergency staff from Saudi Arabia only; spokesperson Tammy Bruce denied similar orders elsewhere. Channel 15's report of region-wide family evacuations remains unconfirmed.
What is Tehran demanding?
SNSC Secretary Mohsen Rezaei told Drop Site News that Iran has submitted seven conditions via mediators. Under his terms, the US acts first, then Hormuz reopens under arrangements agreed with Oman, and guarantees must be "built into the structure" of any deal.
He named cables, data centres and AI facilities as targets if war resumes, a new explicit escalation. He also admitted Iran reopened Hormuz too early under the Islamabad MoU.
WSJ (single-source) listed a transfer of Iran's HEU stockpile to Russia among the proposals. This conflicts with Rezaei's earlier line that no HEU leaves Iran.
What happened on the Saudi front?
Houthi spokesman Saree's claims are single-source. Smoke over central Riyadh is visible, and the coalition says it downed four drones.
Al Arabiya raised the Dammam death toll to two. Reuters, citing six sources, said Aramco ordered Dhahran staff to work remotely.
The Aden government's Defence Ministry deleted a post threatening to strike tribal gatherings, and Defence Minister al-Aqili apologised (corroborated).
How are markets and sanctions moving?
Saudi Arabia's Tadawul index fell 2.3% on the week, its worst weekly loss in more than two years (Reuters). The IMF forecasts the Middle East, North Africa and Pakistan region will contract 1.3% in 2026.
Germany's regulator BaFin ordered Bank Saderat's Hamburg branch liquidated. The UK ended general licences for five Iranian banks and insurers, effective midnight 22 Oct.
What to watch next (24-72 hours)
Any UKMTO/JMIC confirmation of the tanker strikes, plus vessel IDs and war-risk premiums.
The Istanbul foreign ministers' meeting on 23 Oct, which Iran is not attending.
Saudi acknowledgement of damage in Riyadh and Yanbu, and any Saudi escalation against Houthi-held areas.
Israel's 27 Oct election, and Chief of Staff Zamir's caveat that a pre-election strike is unnecessary "unless preparations detected."
How mediators handle Iran's seven conditions before 3 Nov.