President Donald Trump announced Sunday that Russia and Ukraine had agreed to an “energy ceasefire,” ordering both sides not to violate the arrangement as the war continues and disputes over energy infrastructure and fuel prices intensify.

Trump provided few details about the agreement in a brief social media post, saying only that it took effect immediately and that both countries had agreed to the terms. “Do not break it!” he wrote. Neither Moscow nor Kyiv immediately commented on the announcement, and the White House did not initially provide further clarification.

The announcement came as Ukrainian President Volodymyr Zelenskyy said Ukraine was prepared to stop attacking Russian oil refineries if Moscow halted strikes against Ukraine’s energy infrastructure. Speaking in an interview aired Sunday on ABC’s “This Week,” Zelenskyy urged Trump to pressure the Kremlin to accept such an arrangement.

“We are asking President Trump to give them a signal, not to attack energy infrastructure of Ukraine,” Zelenskyy said.

Trump has spent weeks urging Zelenskyy to stop Ukrainian attacks on Russian energy facilities. On Saturday, the president also said it was time for Ukraine to get a new president, arguing that Zelenskyy had not done enough to end the war and blaming him for contributing to high diesel prices in the United States.

Zelenskyy responded by saying Ukraine could hold elections if Russia agreed to a 60-day ceasefire. He argued that a temporary halt in fighting would give Ukrainian authorities time to organize a vote while addressing the security challenges created by the war.

“Give us two months, 60 days off. Total ceasefire, 60 days, and we will organize elections,” Zelenskyy said, adding that he would accept whatever choice Ukrainian voters made.

“With all respect to President Trump, it’s up to our society, up to our people to choose one or another leader,” he said.

Ukraine has been under martial law since Russia launched its full-scale invasion in February 2022. The Ukrainian Constitution prohibits elections while martial law remains in effect, and holding a nationwide vote would present major logistical and security challenges. Roughly one-fifth of the country remains under Russian occupation, millions of Ukrainians have been displaced abroad, and many eligible voters are serving on the front lines.

Zelenskyy’s presidential term formally expired in May 2024, but the constitution provides for him to remain in office until a successor is sworn in. His government has maintained that elections cannot safely or legally proceed under the current conditions.

The diplomatic developments unfolded alongside continued attacks on infrastructure deep inside Russia. A Ukrainian drone strike Sunday damaged a data center operated by Russian technology giant Yandex in the city of Vladimir, east of Moscow, marking the third reported strike on the company's facilities in four days.

The damage disrupted services across multiple locations, leaving users in dozens of Russian cities and in Kazakhstan, Belarus and Armenia unable to access certain services, according to the Russian independent news outlet Astra.

“As a result of the drone attack, the infrastructure of Yandex’s data center in Vladimir was damaged. Operations at the data center have been completely halted. There were no injuries,” Yandex Cloud said in a Telegram update.

Yandex operates Russia’s most popular search engine alongside a broad range of digital services, including ride-hailing, online shopping, banking-related services and cloud computing. The company is also involved in Russia’s artificial intelligence development, making its infrastructure important to the country’s technology sector.

The outage disrupted ordinary activities for residents and businesses. Pavel Belyavskiy, a Yandex Taxi driver in Moscow, said he struggled to contact passengers through the service and was forced to cancel some rides after waiting without receiving a response.

Another resident, Igor Mann, said he could not access an order on Yandex Market, even after attempting to connect through a virtual private network. Eduard Malyavko described the disruption as more than an inconvenience, saying the outages affected work and potentially other essential services.

The Vladimir strike followed an attack Thursday that knocked a Yandex data center offline in Russia’s Ryazan region. Ukrainian drones struck another major Yandex facility in the Kaluga region on Friday, partially disrupting its operations, the company said.

Meanwhile, Russian attacks continued to cause casualties in Ukraine. Zelenskyy said search-and-rescue operations had concluded in the southern city of Zaporizhzhia following a Russian bombing Saturday. He reported that 23 people were killed, including four children, while more than 30 others were wounded. Ivan Fedorov, a former regional head and co-chair of the regional defense council, said eight wounded people remained hospitalized.

Separately, local officials in Russia’s Bryansk border region said a Ukrainian drone strike killed a man and wounded two women Sunday.

Trump’s ceasefire announcement comes amid a wider dispute over the administration’s efforts to reduce fuel prices. On Friday, Trump announced a deal for the United States to receive diesel from Russia, seeking to ease domestic fuel costs ahead of the November midterm elections. Ukrainian and European officials have criticized the arrangement, warning that Russian energy revenue could help finance Moscow’s war effort.

The national diesel price averaged $6.23 per gallon Friday, down from a record $6.52 on Sept. 22, according to AAA figures cited in reporting on the deal. Trump has blamed Ukrainian attacks on Russian energy infrastructure for contributing to high prices, while the war involving Iran has also placed pressure on global energy markets.

It remains unclear whether Sunday’s announcement will produce a sustained reduction in attacks or whether Russia and Ukraine have agreed to specific restrictions, monitoring arrangements or enforcement measures. With both sides continuing to strike targets far beyond the front lines, the ceasefire’s effectiveness will depend on whether the governments formally confirm and observe its terms.