Iran is preparing for a longer fight instead of a deal, and that is bad news for anyone buying gas, food, or anything that moves by truck.

• Iran's hardliners have handed more control to the IRGC, promoted war veterans, and ramped up missile and drone production.
• The US-Iran understanding has expired, and Iran says the Strait of Hormuz stays shut until the blockade and oil sanctions are lifted.
• Iran is seizing and hitting tankers again, including ships using routes it had itself approved.
• Oil is pushing toward $90 a barrel with gas near $4 a gallon, and diesel is the bigger problem — refining margins are at record highs and US refineries have no spare capacity.
• Diesel near $6 a gallon would raise the cost of trucking, trains, and food, feeding straight into grocery prices.

Outlook: A third round of fighting looks likely, and diesel is on track to break its all-time high within weeks unless the strait reopens.