The first tanker carrying Russian diesel to the United States since 2022 is expected to arrive in New York within the next few weeks, but its 40,000-ton cargo amounts to less than two hours of American consumption. The shipment will barely register at the pump—and it answers the wrong question, since what drove American diesel past $6 a gallon was never a shortage of Russian supply, but historic bottlenecks from the war in the Middle East.

Recall what happened between May and July of this year, when Ukraine launched one of the most destructive phases of its energy war against Moscow, sending waves of drones attacking massive Russian refineries at Kirishi, Ryazan, Moscow, Nizhny Novgorod, and Omsk one after another. If Russian refining capacity governed American fuel costs, prices at U.S. truck stops should have exploded. Instead, American diesel fell by $1.06 a gallon.

With the midterms days away and September’s consumer price index showing fuel oil up a staggering 74% on the year, President Donald Trump has cast Kyiv as the architect of American inflation. “What’s happened in Russia with Ukraine has been really the biggest problem for diesel,” he said in the Oval Office on September 30 before naming Ukrainian President Volodymyr Zelenskyy the culprit, telling reporters that Zelenskyy “wants to make problems for our farmers, our ranchers, with diesel fuel.”

The charge is politically convenient but economically backward. Until this month’s waiver, Russian fuel had been barred from American ports since 2022, meaning Ukrainian strikes have reached U.S. pumps only through the gradual tightening of global supply. The real shockwave runs through the Strait of Hormuz, where Tehran can choke off a fifth of the world’s seaborne crude overnight. Diesel was $3.48 a gallon in January and still under $4 the week American and Israeli bombs fell on Iran. When Tehran closed the Strait, the price jumped 96 cents in a single week. 

From that moment, the U.S. price line has moved in lockstep with the Iran war—cresting at the April ceasefire, dipping only after the June truce, climbing after the pause in hostilities collapsed in July. By September, the tanker war had driven diesel to a record $6.53. 

Ukraine’s unceasing drone campaign has at most modestly nudged up the global floor, while the Iran war has steered every spike and plunge.

By authorizing the sale of Russian diesel, Washington provided Moscow the relief that sanctions are meant to withhold. And when Zelenskyy refused to halt strikes on Russian refineries, Americans throttled the Starlink defenses only they can supply. 

Now, Ukraine and its European backers are left with a narrowing set of options. Pulled with discipline, however, the levers they hold can still keep Russian President Vladimir Putin’s war on a tightening clock.

A cure that feeds the disease

After an Oct. 9 phone call with Putin, President Trump directed the Treasury to reopen American ports to Russian diesel through April 2027. On paper, the deal promises 4.8 million tons of fuel. In reality, the promise amounts to roughly 10 days of U.S. demand, and analysts doubt that Moscow can ship even that much after months of Ukrainian strikes on the refineries that would fill the tankers.

Carnegie’s Sergey Vakulenko calls the arrangement “largely for show,” yet for a Kremlin watching its September oil and gas tax revenues plunge 22% year-over-year, the spectacle is the prize. What former U.S. Ambassador Michael McFaul condemned as “absolutely deplorable,” and........

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