US President Donald ‌Trump on Sunday called on Ukrainian President Volodymyr Zelenskiy to stop targeting Russian diesel infrastructure, saying the attacks were causing a shortage of the ​fuel that is "hurting the world".

A wave of long-distance Ukrainian ​drone attacks on Russian oil refineries in recent months ⁠has reduced that country's fuel production, triggering gasoline shortages ​across the country.

Ukraine, which faces regular Russian attacks on its own ​energy infrastructure, says refineries are legitimate military targets.

The US national average price for diesel, which is used by trucks, trains, ships and farm equipment, rose ​over $6 a gallon for the first time on Thursday, according ​to price tracker GasBuddy.

"Mr. Zelenskiy has to do one thing: He has to ‌stop ⁠knocking out diesel fuel in Russia," Trump told journalists during a visit to the Irish Open, which is being held in the west of Ireland on a golf course owned by ​his family.

"We spoke ​to Mr. ⁠Zelenskiy about it. There are plenty of other targets. Don't hit diesel fuel. That's hurting the ​world," he said.

The global shortage "isn't done by the ​Middle East, ⁠this is done by what's happening with Russia and Ukraine," Trump added.

Russia downgraded its oil output forecast for this year to a 17-year low ⁠and ​revised its fuel exports outlook for 2026 and 2027 ​due to the war, according to a government draft forecast seen by Reuters.