〔Day Digest〕WTI Below $80, Brent Down 9% in Five Days on Iran-Oman Hormuz Corridor Talks - Gharibabadi's No-Warships Veto and a Single-Source RIA Ceasefire Memo Keep the 'Deal' Priced on Sentiment

0. The Arc

The Iran-Oman Hormuz talks reset the tape: WTI to $80.37 intraday and Brent to $85.19, with Aug 25 settles at $82.36 (-3.12%) and $88.58 (-3.89%), and WTI/Brent October contracts down ~7% and ~9% across five sessions ^[1][2][3][4]. Yet the traded 'deal' is text contested on the record - Gharibabadi's merchant-ships-only / pre-emption caveat and a US official's claim that 'Iran has lost control of the strait, now the US controls it' sit on opposite sides of the same waterway ^[5][3][6]. The market is pricing a framework it cannot yet read ^[2][7].

1. The Mechanism: Iran-Oman Corridor Proposal

• **[NEW] Joint statement:** Iran and Oman announced a mutually agreed safe shipping corridor with joint coast-guard coordination and continued talks on traffic management, information exchange and navigation services; Oman's foreign minister called the Tehran talks 'constructive' ^[8][9].
• **[NEW] Iran's terms - Deputy FM Kazem Gharibabadi (state broadcaster IRIB, Aug 25):** entry routes through Iranian waters, exit routes through Omani and Iranian waters; no military vessels; only merchant ships permitted ^[5][7][10]. He also warned that pre-emptive strikes against US targets remain an option if conditions warrant ^[6].
• **[ONGOING] US posture:** Secretary of State Marco Rubio told allies the US will not launch new military action; policy is naval blockade + Treasury sanctions, with pressure to push as much oil as possible through Hormuz ^[3]. A US official quoted as saying 'Iran has lost control of the strait, now the US controls it' and that mines are largely cleared ^[3].
• **[NEW] Qatari role:** Foreign Ministry spokesperson Majed Al-Ansari called US sanctions 'unilateral,' urged sincere participation in mediation, and said restoring navigation to its pre-war status is the priority ^[11].
• **[ONGOING] Pakistan track:** Reports that the Pakistan-mediated Islamabad MoU will restart with technical talks, and a US-Iran ceasefire framework including free Hormuz navigation is to be 'announced in coming days' per RIA citing Pakistani and Iranian sources ^[2][7]. No corroboration in Western wires ^{[12][13][7][14]}. Single-source - mark thin.

2. Oil and Refined Products

• **[NEW] Crude:** WTI -$2 to $80.37 on the talks ^[1]; intraday WTI $80.69 / Brent $85.19, both ~2% lower ^[2]; Aug 25 settle WTI -$2.65 to $82.36 (-3.12%), Brent -$3.59 to $88.58 (-3.89%) ^[3]. WTI/Brent October contracts down ~7% / ~9% over five sessions ^[4].
• **[NEW] Chinese futures:** SHFE fuel oil -5.01% to 3,738 yuan/ton, INE low-sulfur fuel oil -5.33% to 4,827 yuan/ton ^[5][10]; SC crude -3.80% to 569 yuan/bbl ^[3].
• **[NEW] Downstream:** Fuel oil -8.4%, crude -6.3%; synthetic rubber, ethylene glycol, paraxylene, methanol, propylene all -5%+; A-share oil & gas sector -~2.5% ^[2].
• **[NEW] LPG:** Sept 2H CFR East China propane $860/ton (-$14), butane $880/ton (-$14); South China propane $870/ton, butane $890/ton, each -$14/ton ^[10].
• **[NEW] Tanker flow:** 4 million bbl of Saudi crude doing ship-to-ship transfer in Omani waters, cargo heading to Asia ^[15].

3. The Contradictions

• **Strait control:** A US official says mines are largely cleared and the strait is under US control ^[3], while Deputy FM Gharibabadi says Hormuz remains under full Iranian military control and surveillance, and publicly refutes Trump's mine-cleared claim ^[16][6].
• **Ceasefire memo:** Russian state RIA cites Pakistani and Iranian sources for an Iran-US ceasefire including free Hormuz navigation, to be 'announced in coming days' ^[7]. No corroboration in Reuters, Bloomberg, or other Western wires ^{[12][13][7][14]}. Single-source - flag as thin.
• **Sanctions track:** Aug 24 US Treasury expanded secondary sanctions; Aug 25 Saudi media reported the US proposed lifting sanctions in exchange for Hormuz opening ^[17]. Two separate policy postures in 24 hours.
• **Tanker behavior:** Iran is still routing oil through neutral-state territorial waters to evade US attacks, and near-zero tankers have called at Iran's Kharg Island over the past two weeks per US officials ^[16][3]. An 'interim framework' on shipping does not fix Iran's export-route problem ^[16][13].
• **Pattern recognition:** Huatai's macro desk frames the arc as 'fighting while talking' - June 18 US-Iran MoU effectively void, July 7 US resumed strikes and sanctions, July 24 brief ceasefire, Aug 2 Trump paused a new strike round, Aug 19 'toughest economic action,' and now talks ^[17]. Multiple prior false dawns sit in the rearview.

4. What Decides Next

• Whether the Iran-Oman joint statement converts to a binding corridor arrangement with verified commercial transits; Gharibabadi's 'no warships' condition is the binding constraint for any US acceptance, and it sits in direct tension with the US official's claim of US control of the strait ^[5][3][7][6].
• Whether the RIA-reported ceasefire framework materializes or fails to corroborate - that sets the floor under the crude rally ^[7].
• Pakistan-mediated Islamabad MoU restart timing, and verified navigation through Iran's claimed Iranian-waters entry / Omani-Iranian exit lanes ^[2][7][10].
• Japan's pipeline diversification: pre-war >90% of Japanese imports were Middle East crude; Tokyo plans to support non-Hormuz route pipelines, with US shale and Latam crude as the structural winners ^[18][19].
• Tanker-flow tracker (BCA series from March 9) to validate the 'free navigation' claim against ground-truth transits by vessel type ^[20].