Explosions rocked Kyiv, the Ukrainian capital, before dawn on Friday as air defense crews raced to combat a large-scale Russian bombardment, the authorities said.
The Ukrainian Air Force reported that Russia had begun launching ballistic missiles, cruise missiles and drones at the capital and other cities overnight. Multiple fires were reported across Kyiv, including at a 16-story apartment block. Mayor Vitali Klitschko said at least three people had been injured, and officials cautioned that the toll could rise as the attack was still underway.
Russia has launched more than 1,000 drones per week at military and civilian targets in Ukraine in recent months, including more than 300 in a single night last week. On Wednesday, Russia's leader, Vladimir V. Putin, warned President Trump that his country would retaliate against Ukraine for its audacious drone attack last weekend on airfields across Russia, according to Mr. Trump.
On Thursday, Mr. Trump compared Russia and Ukraine to two fighting children who needed to work out their differences before their bloody war could end.
"Sometimes you're better off letting them fight for a while and then pulling them apart," he said in the Oval Office as Germany's chancellor, Friedrich Merz, urged him to leverage the power of the United States to end the conflict.
Mr. Trump avoided answering a question about whether he was willing to increase pressure on Russia. The Kremlin has repeatedly resisted his calls for an unconditional cease-fire.
Since the beginning of this year, the Russian military has carried out attacks against Ukraine using nearly 27,700 aerial bombs, almost 11,200 Shahed drones, around 9,000 other attack strike drones and more than 700 missiles, including ballistic ones, President Volodymyr Zelensky of Ukraine said on Thursday.
"This is the pace of Russian strikes, and they deliberately set this tempo from the very first days of the full-scale war," Mr. Zelensky said. "Russia has restructured its entire state, society, and economy to be able to kill people in other countries on a massive scale and with impunity."
Before the overnight bombardment, Russia launched high-explosive aerial bombs at the center of the southern Ukrainian city of Kherson on Thursday morning, partially destroying the Regional State Administration building and damaging several surrounding structures.
On Wednesday night, the Russians attacked the city of Pryluky in the northeastern Chernihiv region, killing at least five people, including a 1-year-old baby, Ukrainian officials said.