Oil's jump past $105 adds to a diesel bill already up almost 70% since the Iran war began

In my view, the decision under discussion in Washington mostly changes the size of the tail risk. Francisco Blanch, head of global commodities at Bank of America, set out both cases in early September. "If skirmishes curbing oil flows continue into year end, Brent could trade in a $95-120/bbl range," he wrote ^[10]. "Meanwhile, a broader conflict resulting in major energy infrastructure damage may spike prices as high as $150/bbl," he added ^[11]. Brent at just over $105 already sits inside his first range ^[1]. His second case is about 43% above Thursday's price ^[18].

A skeptic would say nothing has been decided ^[5], and that a budget written off one news report can lock in the top of a spike. That objection holds for crude. It is weaker for diesel and freight, both of which had been climbing for months before Thursday. Retail diesel is $6.28 a gallon, up almost 70% since the war began on Feb. 28, and recent escalation in the Ukraine-Russia war has added to the rise ^[12]. Regular gasoline averages $4.36, more than 45% above its Feb. 28 level ^[13]. Crude freight from the US to Asia costs about 8.4 times its 2025 average ^[17]. Shipping costs for producers unaffected by the strait closure have hit new highs as they scramble to meet demand ^[16].

Borrowing costs are the weakest part of the case for acting ahead of a decision. The 10-year yield reached 5.35% in a single session, undoing a decline from the evening before ^[4], and yields on every other Treasury bond rose with it ^[15]. Whether that level holds once oil settles, we do not know yet. Equity futures did mark smaller companies as more exposed. Russell 2000 futures fell 1%, against 0.6% for the S&P 500 ^[6].

The timing is political. A return to large-scale strikes would end an uneasy stalemate with Tehran that has lasted three months ^[7], and the White House is weighing one for the coming weeks ^[2]. The midterm elections are less than a month away, with early voting under way ^[20]. NBC News reported that any substantial action in that window would be likely to have at least some impact on voter attitudes ^[20].

This quarter's choice for a fuel-heavy operator is which Brent price the fourth-quarter budget assumes. Next quarter's consequence follows from that choice. A budget built near $105 matches Blanch's continued-skirmish case and sits about $45 a barrel below his escalation case ^[19].