〔Overnight Brief〕Brent Below $85 on Iran-Oman Hormuz Framework, 2% Rebound to $87.58 as 'Not Finalized' Source and HAANA Detention Hit; Oman Halts US Escort Cooperation - Deal-Signed vs Deal-Done

0. Overnight Arc

The framework sold, the denial bought, and the tanker detention locked in the bounce. Iran and Oman announced a Hormuz shipping-corridor framework in the Asia session, sending Brent to ~$85/bbl and WTI toward $80, with the week down more than 9% ^[1]. A senior Iranian source then told Reuters and FinancialJuice the deal "has not yet been finalised" ^[2][3][4], and Fars News reported that Indian tanker HAANA was deterred on the southern corridor after a warning ^[5][6] — WTI rebounded +2% to $82.30, with a tick to $82.57, and Brent +2% to $87.58 ^[7][8]. Net: deal-signed and deal-done have diverged.

1. The Deal Mechanics

• **[NEW] Framework terms, per Iranian and Chinese state-media reporting:** inbound transits through Iranian waters, outbound through Iranian-Omani waters; warships barred, commercial vessels only ^[1]. A 30-60 day window is set for negotiating a permanent route ^[1].
• **[NEW] Revenue and water-share:** IRGC spokesman Hossein Mohbi said Iran and Oman agreed on the strait's water-share and the revenue split each side will collect ^[9].
• **[ESCALATED] 'Not finalized':** a senior Iranian source said the agreement has not been finalised and details are still being worked through ^[2][3][4]. Treat the framework as a press statement pending bilateral confirmation.
• **[ONGOING] Iranian conditions:** Mohbi said the US is "interfering" in the process and that "if the US does not accept our conditions, the Strait of Hormuz will never open" ^[9]. Iran also says no enemy warships are in the Persian Gulf ^[9].
• **[NEW] Oman halts US cooperation:** per Iran's Press TV, Oman has stopped cooperating with the US on escorting tankers through the southern Hormuz route ^[10].

2. Market Read

• **[NEW] Oil, intraday reversal:** Brent slid to ~$85 and WTI to ~$80 on the framework news ^[1]; later WTI rose +2% to $82.30 and Brent +2% to $87.58 on the "not finalised" report and HAANA detention ^[7][8]. YTD oil gains still exceed 41% ^[1].
• **[NEW] China energy complex:** domestic SC crude -5.98%, fuel oil (FU) -7.95%, low-sulfur fuel oil (LU) -8.9%, LPG (PG) -4.72%, bitumen (BU) -2.63% — Huatai Tianji attributes the move to Middle East de-escalation signals ^[11].
• **[ONGOING] Shipping:** the FT cites a shipping boss warning of an Iran war heading toward a "Ukraine-style stalemate" with freight rates still at record highs even as oil falls ^[12]. **[NEW]** MSC Mediterranean Shipping Co. suspended new bookings to/from Russia's Novorossiysk port after a drone attack on one of its vessels ^[13].
• **[NEW] IEA framing:** the agency says the Middle East conflict is reshaping energy investment toward security, electricity and diversification ^[14].

3. Contradictions and Tail Risks

• **Trump vs Iran:** Trump says 10 million barrels flowed through Hormuz yesterday and mines are cleared ^[15][16][17]; separately he told Al Jazeera he has "no timetable" and "is not in a hurry" on Iran's return to talks ^[18]. Mohbi says the US is delaying the process and the strait stays closed unless conditions are met ^[9]. Print both — neither side has a confirmed bilateral channel.
• **Bessent 'economic D-Day':** Bloomberg frames Treasury Secretary Scott Bessent's new "economic isolation" sanctions as "Grenada rather than Normandy," with few details on how to fully open Hormuz ^[19]. Trump announced "devastating economic action" on August 19; Bessent announced fresh sanctions on August 24 ^[18]. Iranian President Pezeshkian said the US economic pressure "will achieve no results" ^[18].
• **Maritime prize court:** the US Justice Department is preparing to activate a long-dormant Civil War-era maritime court to streamline capture of Iranian oil as prizes, per three people familiar ^[20].
• **Source quality:** the "not finalised" claim traces to a single senior Iranian source relayed via Reuters pick-up and FinancialJuice ^[2][3][4]; the HAANA detention report is a single source via Fars News on FinancialJuice ^[6]. The 30-60 day permanent-route timeline is from Iranian-aligned and Chinese state-media relays — print as the Iranian position, not a bilateral fact, until Oman confirms.
• **Falsifiable test:** whether any commercial vessel completes a documented transit on the agreed corridor inside the 30-60 day window, and whether the US accepts Iran's conditions before then ^[1][9].