New Front in Iran War: Diesel Prices See Second Largest Jump Since Conflict Began

Energy markets are rattled by the second most significant price surge since the Iran war commenced, with data from the U.S. Energy Information Administration (EIA) revealing that the benchmark diesel price soared by 33.8 cents to $5.134/gallon this week. Following the record spike in late February and early March, this increase—driven by the resumption of military action—has pushed total gains over the last three weeks to 55.6 cents/gallon.

Bull Run in Futures: ULSD Targets $1 Increase

The sharp rise in retail prices mirrors the volatility in Ultra Low Sulfur Diesel (ULSD) contracts trading on the Chicago Mercantile Exchange (CME). Markets agree that current retail prices have not yet fully absorbed the shock, painting the following picture:

■ULSD on the CME settled at $4.119/gallon on Monday, rising in seven of the last 11 sessions since hitting a cycle low of $3.1822/gallon on July 2.

■Daily gains were aggressive, hitting peaks of over 39 cents, 27 cents, and 19 cents, while the largest single-day decline was merely 8.59 cents.

■If current momentum persists, a $1/gallon increase since the July 2 low appears imminent.

Bab el-Mandeb and Yanbu Port: New Blow to Supply Routes

The strengthening bullish sentiment is fueled not only by price action but by shifting dynamics in the geopolitical risk map. Reports regarding potential Houthi attacks on Saudi Arabia and the Bab el-Mandeb Strait at the southern end of the Red Sea are threatening strategic supply lines.

■The port of Yanbu, the western terminus of Saudi Arabia's east-west pipeline which allows the Kingdom to bypass the Strait of Hormuz, sits directly in the line of fire.

■A disruption at this critical chokepoint would eliminate a key alternative export route for Saudi oil, dealing a severe blow to global supply security.

From an Emerging Markets (EM) perspective, this diesel rally is not merely an energy cost hike; it is a direct inflationary shock. The sudden spike in logistics costs threatens to reignite current account deficit pressures in energy-importing economies like Turkey and India. On the Asian front, despite China's demand recovery signals, such supply-driven price spikes undermine the "transitory" inflation narrative central banks hope to maintain, thereby pushing risk premiums higher.