〔Day Digest〕ADNOC Tankers Struck in Hormuz as Diesel Cracks Top $97, Asian Refiners Pay $10-14 Premiums for US Crude - Washington Denies Strike Push, Readies 'Unprecedented' Economic Isolation

1. Tanker Strikes and the Blockade

• [NEW] A commercial tanker was struck by a drone in the Strait of Hormuz on Thursday, the UKMTO reported, issuing a navigation advisory; damage was minor, all crew were safe and accounted for, and no environmental impact was reported ^[1][2].
• [ESCALATED] The UAE Foreign Ministry said early Thursday that two Abu Dhabi National Oil Company (ADNOC) tankers were attacked by Iran while transiting the strait; the attack occurred on the night of 13 August, caused no casualties, and was framed as a threat to regional stability, public safety and global energy security ^[3][4].
• Traders say the strait remains essentially closed, with transit volumes in the second half of this week below the monthly average; the US and Iran both claim control ^[5].
• Supertankers are extending 'dark' periods to move oil through Hormuz and Bab el-Mandeb, a tactic from earlier in the war ^[6]. A Jin10 headline argues actual Hormuz flows may be higher than market estimates, giving President Trump more time to apply economic pressure ^[7].

2. Product Markets and the Diesel 'Perfect Storm'

• [ESCALATED] The US diesel crack spread broke above $97/bbl intraday Thursday, approaching $100, an all-time high; three of the world's four major refining hubs are in varying degrees of shutdown, and the International Energy Agency sees a 1.8 million b/d global supply deficit this quarter, more than double its prior estimate ^[8].
• Bank of America's head of commodities, Francisco Blanch, warns that unless supply sees a substantial recovery, the diesel market will stay tight, volatile and expensive for much of next year ^[8].
• Jefferies analyst Sam Burwell says the tightness is showing through cracks rather than crude price, meaning refinery runs should stay high ^[8].
• Brent, by contrast, has held a $87-90 range this week with a near-5% gain ^[8].

3. Asian Refiners Lock In US Crude

• [NEW] At least four Asian refiners bought US crude this week for delivery later this year, traders told Cailian Press ^[5].
• South Korea's GS Caltex bought 2 million barrels of Mars crude from Shell for November, at a premium of about $13-14/bbl over October Dubai; Japan's Cosmo Energy Holdings bought Mars from Trafigura, and Japan's largest refiner ENEOS bought 2 million barrels of WTI from Trafigura for November at over $10/bbl above October WTI ^[5].
• The expectation is that fuel supply tightness will lift refining margins and push refiners to lock in stocks from outside the Gulf ^[5].

4. Policy and Force Posture

• [NEW] US Central Command spokesman Tim Hawkins denied that military leadership is pushing a new round of Iran strikes, calling a Channel 13 report 'pure fabrication, not fact' ^[9].
• The report said CENTCOM commander Brad Cooper, visiting Israel, advocated renewed strikes on Iranian gas, oil and power infrastructure, arguing the US would likely have 'no choice,' would need Israeli joint action, and that this would 'change the game'; Cooper allegedly proposed this to Joint Chiefs Chairman Dan Caine and informed President Trump ^[9].
• Washington plans to intensify economic pressure next week, with Treasury Secretary Scott Bessent warning of measures 'unprecedented in the history of economic isolation'; ceasefire talks are faltering and the naval blockade continues ^[10].
• [ONGOING] The USS George Washington has begun moving toward the Middle East to replace the USS Abraham Lincoln, where lawmakers and families have raised concerns over living conditions and mental health; the rotation was reportedly planned before those concerns emerged ^[11][12][13].

5. Spills, Flows and Session Read

• [ESCALATED] Iran claims 'trillion-dollar damage' as oil spills spread: residues from a struck bulk carrier reached Qeshm Island's mangroves, and a sanctioned Russian shadow-fleet tanker grounded off Oman has produced a slick exceeding 2,000 square kilometers, fouling 40 km of Omani coastline ^[14]. A British firm has started containment of the Oman spill ^[15].
• [ONGOING] Bloomberg's Rachel Ziemba said oil held a decline as tankers loaded with crude continued to exit the Persian Gulf despite persistent threats and limited progress on an Iran-Oman reopening deal, in a regional war that began in late February ^[16]. Prices inched higher Friday after the US threatened to maintain a naval blockade of Iran indefinitely, after falling the prior session on weaker demand ^[17].
• Asian stocks traded mixed as US inflation cooled and Hormuz risks weighed ^[18].