〔Day Digest〕US Asserts Hormuz Control, Aids 13 Million b/d Transit, Yet IRGC Captures a Remus 600 AUV and Riyadh Schools Go Online — 'Trump Strait' Rebrand Caps the Day

0. Day Arc

A dueling-narrative session. The US says it 'controls' the Strait of Hormuz and is escorting close to 13 million barrels per day of oil, gas and fertilizer through the chokepoint ^[1][2]. Iran says it captured a US Remus 600 autonomous underwater vehicle in the same waterway and put the army on alert for a renewed US strike ^[3][4][5]. Trump publicly rejected Iran's seven-day plan and rebranded the strait 'Trump Strait' ^[6][7]. Schools in Riyadh flipped to online for next week with no reason given ^[8].

1. Control Claims Versus Captures [ESCALATED]

• **[NEW] US posture:** the United States said it controls the Strait of Hormuz and rejected Iran's demands, relayed by a Ukrainian wire ^[1]. Trump reposted imagery again referring to the chokepoint as 'Trump Strait' ^[7].
• **[NEW] IRGC Navy capture:** Iran's Revolutionary Guard Navy said it trapped a US Remus 600 advanced autonomous underwater vehicle 'with intelligence dominance and electronic warfare support' on a spy mission in the strait; experts are extracting data ^[5]. The IRGC later published information on the device ^[9], and a separate IRGC readout confirmed the capture ^[4].
• **[NEW] Army alert:** Iran's armed forces are prepared for any renewed US attacks, state media quoted army spokesperson Mohammad Akraminia as saying on Sunday, after Trump's rejection ^[3]. A separate Iranian state-media readout warned the US may launch a new attack because of its 'bad situation' and said Iran is ready to inflict greater damage ^[10].
• **[NEW] Escalation risk:** analysts warned that Trump's rejection of Iran's seven-day plan raises the risk of escalation ^[11].

2. Transit Numbers [ONGOING]

• **[NEW] US Energy Secretary Wright:** US forces are helping oil, natural gas and fertilizer move through the Strait of Hormuz, with daily transit 'close to 13 million barrels' ^[2].
• **[ONGOING] Saudi exports:** Saudi crude oil exports hit the highest level since the Iran war began, even with the pipeline out, per CNBC ^[12].
• **[NEW] Gulf aggregate:** Gulf-region crude exports crossed a redacted threshold (the source renders the level as 'X000' in units of 10 million barrels per day, with the leading digit obscured) for the first time since the war began ^[13].
• **[NEW] Reroute:** Iran is shifting trade north to the Caspian Sea as the war impairs the Strait of Hormuz, per Al Jazeera ^[14].

3. Diplomatic Track [ONGOING]

• **[NEW] Trump rejection:** the US president rejected an Iranian proposal to reopen the strait and end fighting ^[6][3]. Iran's foreign minister said Tehran 'saw the initial reaction' from Trump but mediators had not yet conveyed any information; Iran is 'waiting' ^[6][7].
• **[NEW] Iranian conditions:** Iran's foreign minister said the strait's openness 'depends on whether our conditions are met' ^[7].
• **[NEW] Iranian presidency:** Iranian President Pezeshkian said Tehran 'no longer trusts' negotiations with the US but that the Hormuz crisis 'can be solved through negotiation, not force' ^[7]. He also said neither Iran nor Yemen was behind the attack on a Saudi pipeline and that Israel 'cannot be ruled out' as the actor ^[7].
• **[NEW] Saudi position:** Saudi Arabia's foreign minister said freedom of navigation in the strait and other international waterways must be ensured ^[7].
• **[ONGOING] Oman:** Oman's foreign minister Badr said Oman will continue efforts to secure passage and called on parties to cooperate under international law ^[7][15]. Oman and Iran issued a joint statement on August 25 on a mutually agreed safe maritime corridor ^[15].
• **[NEW] (single source) Linking:** Iranian media reported that behind the New York talks the US had linked an opaque item, rendered in the source as 'Gaoshan', to the Strait of Hormuz ^[16]. Treat as unverified.

4. Backdrop and Knock-on Signals [ONGOING]

• **[NEW] Riyadh schools:** parents in the Saudi capital received emails on September 27 telling them schools would close next week and shift to online classes, with no reason given; parents linked it to security tensions ^[8]. Single-source (CCTV relay via a Chinese wire) ^[8].
• **[ONGOING] Other theatres:** a Saudi-led coalition said it intercepted Houthi drones and missiles; the Israeli military struck targets across Gaza and a Hezbollah weapons storage site in southern Lebanon ^[7]. Trump said Iran will not be allowed to have nuclear weapons ^[7].
• **[ONGOING] Narrative backdrop:** an FXStreet weekly column framed the Strait of Hormuz through the symbolism of Jupiter in global shipping — a softer read on the same chokepoint ^[17].

5. What Would Falsify the Narrative Split

The headline contradiction — US 'controls' plus 13 million b/d assisted transit versus Iran capturing a US drone in the same waterway — sits on a single day of reporting ^{[1][2][3][4][5]}. The Iranian side rests on state media ^{[10][3][4][9][5]}; the US 'control' line is relayed through a single wire ^[1] and the 13 million b/d figure comes from one official statement ^[2]. Falsifiable triggers: (a) data-extraction results on the Remus 600, (b) any mediated US reply to the seven-day plan, and (c) confirmation that Riyadh's school closure is security-driven. The redacted Gulf export figure in ^[13] should be quoted as a band, not a point.