KYIV, Ukraine — Russian forces launched a new drone assault across Ukraine overnight on Wednesday, killing three people and wounding 64 others, Ukrainian officials said.

One of the hardest-hit areas was the city of Kharkiv in northeastern Ukraine, where 17 attack drones struck two residential districts, Mayor Ihor Terekhov said. Emergency crews, municipal workers and volunteers worked through the night to extinguish fires, rescue residents from burning homes, and restore gas, electricity and water services.

“Those are ordinary sites of peaceful life — those that should never be targeted,” Terekhov wrote on Telegram.

Three people were confirmed killed, according to Kharkiv regional head Oleh Syniehubov. In a statement, Ukrainian President Volodymyr Zelenskyy said that 64 people had been wounded and reiterated his calls for greater international pressure on Moscow.

“Every new day now brings new vile Russian attacks, and almost every strike is telling,” he said. “We must not be afraid or postpone new decisions that could make things more difficult for Russia. Without this, they will not engage in genuine diplomacy. And this depends primarily on the United States and other world leaders. Everyone who has called for an end to the killings and for diplomacy must act.”

Moscow’s forces have launched waves of drones and missiles in recent days, with a record bombardment of almost 500 drones on Monday and a wave of 315 drones and seven missiles overnight on Tuesday.

The attacks come despite discussions of a potential ceasefire in the war. The two sides traded memorandums at direct peace talks in Istanbul on June 2 that set out conditions. However, the inclusion of clauses that both sides see as nonstarters make any quick deal unlikely.

Zelenskyy urges more sanctions

Speaking at a meeting of leaders of countries of southeast Europe in Odesa, Zelenskyy urged the European Union to toughen its latest package of sanctions now being prepared.

EU foreign policy chief Kaja Kallas said Tuesday that the bloc is proposing to lower a cap on the price of Russian oil from $60 to $45, which is lower than the market price, to deprive the Kremlin of extra profits to fund its war in Ukraine.

Zelenskyy prodded the EU to lower the cap further, arguing that “real peace comes with a $30 cap — that’s the level that will truly change thinking in Moscow.”

“You can all see — Putin does not want to end this war,” he told his audience. “He believes that as long as he can fight and dominate his neighbors, he stays politically alive.

“But no matter what he believes, our job is to force Russia into a position where they must seek peace and political survival by non-military means.”