Diesel’s Record Price Is Not Just the Iran War: It Is the Cost of Interventionist Energy Policy

How taxes, regulation, refinery closures, sanctions and declining domestic production turned a geopolitical shock into a diesel-price crisis

Do not blame diesel prices on the Iran war or the disruption of the Strait of Hormuz. The geopolitical risk premium attached to oil prices is relevant, but the market was already weakened by policy choices.

Europe has taxed motor fuels heavily, imposed escalating regulatory and carbon costs across the supply chain, closed refining capacity, sanctioned major sources of refined-product supply, and discouraged investment in domestic oil and gas production. Today’s refined product system is smaller, less flexible and more import-dependent, and, as such, every geopolitical disruption produces a larger price shock.

Three members of the Federal Open Market Committee voted to raise rates in July. However, the Committee held the federal funds target at 3.5%-3.75% by a 9-3 vote. Bank of America, Deutsche Bank, and J.P. Morgan all expect a September hike. Across the Atlantic, the European Central Bank raised rates by 25 basis points in June and is expected to raise them again in September.

On August 19, 2026, the U.S. Treasury announced that it would at least double the size of its liquidity-support buyback operations in the 10-to-20-year and 20-to-30-year maturity sectors.

The current maximum of $2 billion per operation will rise to at least $4 billion, effective September 9 through November 4, 2026, the end of the quarterly refunding period. The following day, Scott Bessent added that the figure could exceed $4 billion per issue and that the Treasury would “make a market” in those maturities, according to the Treasury.

It is worth putting the scale in context before talking about monetization. In its August 5 quarterly refunding announcement, the Treasury had already planned to buy back up to $38 billion in off-the-run securities for liquidity support and up to $25 billion in the one-month-to-two-year sector for cash-management purposes during the quarter, according to Treasury Department data. The August expansion adds at least another $14 billion, raising the maximum buybacks for the August 6–November 5 period from $69 billion to $83 billion, according to Reuters.

The US $40 trillion debt has dominated global headlines. However, although the US fiscal challenges are relevant, we must remember an important lesson. Fiscal policy is not about who wins but who loses first.

According to official 2026 estimates, the present value of U.S. Social Security and Medicare financing gaps is about $95 trillion over 75 years, roughly 5% of the cumulative present value of projected GDP over that period, on top of federal debt held by the public, which is already projected at 101% of annual GDP in 2026.

However, the euro area’s hidden fiscal burden is at least as large as its recorded debt. Official European Commission estimates put net accrued public-pension liabilities at around 150% of GDP, after future contributions are considered, while gross pension promises amount to roughly 371% of GDP. Importantly, this excludes much of the future pressure from health and long-term care spending.