US heating oil prices climbed above $4.63 per gallon, moving back toward their record high as refineries faced increasingly constrained refined-product supplies. The Middle East war continued to escalate after Iranian-backed Houthis struck Saudi energy facilities, including the Jazan oil refinery. Ongoing disruptions and reduced traffic through the Strait of Hormuz, combined with Ukrainian attacks on Russian refineries and Moscow's existing export restrictions, are further limiting global diesel supplies. Seasonal agricultural activity could raise demand, while the approaching winter heating season may add pressure to distillate supplies. US refineries were already operating at 98% of capacity in the week ended August 28, and EIA data showed US distillate fuel stocks were 14% below the five-year average in late August.