Ukrainian President Volodymyr Zelenskyy urged U.S. President Donald Trump to broker peace in Ukraine, similar to his role in "the Middle East," during a phone call on Saturday, saying that if Trump could stop one war, "others can be stopped as well."

The call came a day after Russia launched a large-scale attack on Ukraine's energy grid. Russia claims Ukraine uses the energy sites to power its military sector.

Diplomatic efforts to end the Ukraine crisis have slowed in recent months, partly because global attention has shifted to the Israel-Hamas conflict, Kyiv said.

Trump, who announced the first phase of a ceasefire deal between Israel and Hamas on Wednesday, met Russian President Vladimir Putin for talks in August but failed to secure any kind of peace deal.

"I had a call with U.S. President Donald Trump. A very positive and productive one," Zelenskyy said on Facebook, congratulating Trump for his "outstanding" ceasefire plan in the Middle East.

"If a war can be stopped in one region, then surely other wars can be stopped as well, including the Russian war," Zelenskyy added, calling for Trump to pressure the Kremlin into negotiations.

Russian attacks on Ukraine killed at least five people on Saturday and cut power to parts of Ukraine's southern Odesa region, according to Ukrainian officials.

Ukrainian drone attacks, meanwhile, killed two people in Russia, according to regional officials.

Both countries have accused each other of frustrating progress towards a peace deal in recent months.

Russia blames Kyiv and its European allies for the impasse, accusing them of undermining peace negotiations with Washington.

Ukraine and Europe accuse Russia of playing for time to seize more Ukrainian territory.

(With input from AFP)