U.S. President Donald Trump asserted on Sunday that Russia and Ukraine had acquiesced to an “energy ceasefire” in the 4 1/2-year-old war, yet he vouchsafed no particulars thereof, and Kyiv subsequently reported Moscow’s strikes on energy sites in the wake of his statement.

Trump’s terse social media missive stated merely that the ceasefire had taken effect immediately, appending: “Do not break it!”

Moscow abstained from immediate comment.

Ukrainian President Volodymyr Zelenskyy remarked that, while his country “welcomed” Trump’s announcement as “good news for everyone,” Russia was nevertheless persisting in its strikes on energy infrastructure in Kyiv and in the city of Kharkiv.

“Regrettably, Ukrainian airspace has been inundated throughout the day with Russian ‘shaheds,’” he remarked in an evening address, alluding to the drones unleashed by Moscow.

“Glide-bomb strikes have likewise been visited upon us, as have assaults on our energy infrastructure.

A power plant in Kharkiv came under attack this evening.”

The presidential office corroborated that the Kharkiv assault had transpired subsequent to Trump's ceasefire post.

Zelenskyy asserted that Ukraine stood “ready to refrain from striking Russian energy infrastructure — and we count on the same readiness from Russia.”

Russia has endeavored to deprive Ukrainian civilians of electricity, heating, and potable water throughout the war, calculating that such privation would erode public resolve against Moscow’s full-scale invasion.

Ukrainian officials characterize this stratagem as “weaponizing winter.”

Zelenskyy observed that whereas Ukraine had proffered a plethora of de-escalatory measures, Russian President Vladimir Putin “had one answer to all of them — ‘nyet.’

We do hope that he will finally say something different to America, Ukraine, and the entire world.”

He stated that Kyiv is maintaining contact with the U.S., and he expressed gratitude to Americans for their support.

On X, he said he had discussed the development with Canadian Prime Minister Mark Carney, Finnish President Alexander Stubb and NATO Secretary-General Mark Rutte.

In an interview broadcast earlier on Sunday, Zelenskyy asserted that Kyiv stood prepared to cease striking Russian refineries provided Moscow desisted from its assaults on Ukraine's energy infrastructure, and he implored Trump to exert pressure upon the Kremlin to acquiesce.

"We are entreating President Trump to give them a signal, not to attack Ukraine's energy infrastructure," he told ABC's "This Week."

On Sept. 14, Trump asserted via social media that both nations had mutually consented “not to hit” each other’s energy infrastructure, yet he proffered no particulars concerning that proposal either.

Whereas Zelenskyy had declared Ukraine prepared to abide by it should Russia do likewise, the proposal ultimately came to naught.

Trump asserted on Saturday that the time had come for Ukraine to install a new president, insinuating that Zelenskyy had fallen short in his efforts to bring the war to a close and holding him culpable for the exorbitant diesel prices prevailing in the United States.

Zelenskyy, in rejoinder to Trump's remarks, asserted that Ukraine might hold elections were Russia to consent to a 60-day ceasefire.

"Grant us a two-month reprieve — 60 days' cessation of hostilities, a comprehensive ceasefire spanning 60 days — and we shall orchestrate elections," he declared, appending that Ukraine would stand prepared to embrace whatsoever choice its populace rendered.

"With every deference to President Trump, the prerogative to elect one leader or another rests with our society, with our people," he averred.

Zelenskyy appended that conducting an election amid the war would be unlawful and that Ukraine would require security guarantees to facilitate safe voting.

Ukraine has subsisted under martial law ever since Putin inaugurated the full-scale invasion in February 2022, and the Ukrainian Constitution proscribes elections for as long as it remains in force.

Beyond that juridical impediment, a nationwide ballot would be acutely susceptible to Russian attack, and its organisation is almost universally regarded as logistically impracticable, given that roughly a fifth of the country is occupied by Russia, millions of Ukrainians are displaced abroad, and soldiers remain stationed on the front line.

Zelenskyy’s term formally lapsed in May 2024, yet the constitution permits him to remain in office until a new president is sworn in.

The exchange unfolded as Kyiv intensified its campaign against Russian infrastructure, a Sunday drone strike having incapacitated a data centre in the city of Vladimir, east of Moscow, operated by technology conglomerate Yandex — marking the third assault on the company's facilities in four days.

Russia and Ukraine have been prosecuting a protracted aerial campaign at long range, whilst their respective armies remain, to a considerable extent, mired in a stalemate along the front line.

Trump, who on Friday concluded an accord with Putin for the purchase of diesel from Moscow in a bid to temper soaring fuel prices on the eve of the U.S. midterm elections, had for weeks been exhorting Zelenskyy to desist from striking Russian energy infrastructure.

He has endeavoured to attribute record U.S. diesel prices to Ukraine rather than to the U.S.-led war in Iran, which has propelled global energy prices upward.

Ukrainian and European officials responded to the diesel deal with consternation, contending that it will help finance Russia’s war effort.

The Ukrainian drone assault on Yandex's data centre in Vladimir precipitated outages spanning the company's services, rendering users across dozens of Russian cities—as well as in Kazakhstan, Belarus and Armenia—incapable of hailing taxis or availing themselves of banking services, according to the Russian independent news outlet Astra.

"Operations at the data center have been brought to a complete standstill.

No injuries were sustained," stated the Yandex Cloud Telegram channel, which furnishes updates on service availability.

Moscow residents recounted disruptions to their quotidian routines.

Pavel Belyavskiy, a driver for Yandex Taxi, said it was unclear whether orders were coming through at all, and that he had been compelled to cancel several rides after waiting a considerable length of time, owing to his inability to reach the passenger.

"I would depress the 'call' button to establish contact with them, yet nothing transpires," he said.

"There is naught I can do, so I am simply compelled to cancel."

Igor Mann recounted that, in endeavoring to verify an order on the Yandex Market shopping platform, he discovered the page to be inaccessible, and that routing his connection through a virtual private network proved no less futile.

"Nothing worked," he said.

Another Muscovite, Eduard Malyavko, asserted that the outages had exerted a “direct impact” and were not merely a matter of “convenience.”

They had, he said, impinged upon “healthcare, and everything else.”

On Thursday, a drone assault rendered inoperative a Yandex data centre in the Ryazan region, situated southeast of Moscow.

The following day, Ukrainian drones struck the company’s principal data centre in the Kaluga region, southwest of Moscow, incapacitating a portion of the facility, Yandex stated.

Yandex, frequently characterized as Russia’s answer to Google, operates the nation’s preeminent search engine alongside a comprehensive array of digital services, and is profoundly enmeshed in the country’s artificial intelligence endeavors.

Elsewhere, search-and-rescue operations were brought to a conclusion in the southern city of Zaporizhzhia in the wake of a Russian bombardment on Saturday, according to Ivan Fedorov, former regional head and co-chair of the regional defense council.

Zelenskyy said 23 people were killed in the attack, including four children.

More than 30 people were wounded, Fedorov said, with eight still hospitalized.

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