Trump tells Zelenskyy to stop doing 'one thing' during attacks on Russia

President Donald Trump has a blunt message for Ukrainian President Volodymyr Zelenskyy as Kyiv continues targeting Russia: Stop hitting its diesel refineries.

Trump made the remarks Sunday while attending the Irish Open at his golf club in Doonbeg, Ireland, after a reporter asked whether he had spoken with Zelenskyy following a recent conversation with Russian President Vladimir Putin .

"Zelensky has to do one thing.

He has to stop knocking out diesel fuel in Russia," Trump told reporters.

TRUMP NEGOTIATORS WITKOFF, KUSHNER MEET WITH PUTIN IN MOSCOW AS US PUSHES FOR END TO RUSSIA-UKRAINE WAR Trump said Ukraine could continue pursuing other targets inside Russia but urged Zelenskyy to steer clear of the country’s diesel infrastructure.

"Let him go after targets, but not diesel fuel because he's causing a shortage of diesel," Trump said.

"This isn't done by the Middle East.

This is done by what's happening with Russia and Ukraine." The president said he had already spoken directly with Zelenskyy about the issue.

"So we spoke to Mr.

Zelensky about it.

There are plenty of other targets," Trump said.

"Don't hit diesel fuel because that's hurting the world.

We don't want him to hit diesel fuel.

He's hitting diesel refineries." WATCH: FIGHTS BREAK OUT AT RUSSIAN GAS STATIONS AS PUTIN ADMITS FUEL SHORTAGES Trump’s remarks come as Ukraine has targeted Russia’s oil and gas infrastructure with long-range strikes, part of Kyiv’s effort to hamper an industry that provides revenue and fuel for Moscow’s war effort.