Four people were killed while the Kyiv Pechersk Lavra monastery, a symbol of Ukrainian spiritual and cultural history, caught fire, in the heaviest Russian air attack on the Ukrainian capital in two weeks, authorities said on Monday.

The fresh strikes came after Ukrainian President Volodymyr Zelenskiy said on Sunday he had spoken to US President Donald Trump and discussed efforts to achieve an end to the more than four-year conflict, ahead of a G7 meeting in France this week.

The central Kyiv Pechersk Lavra monastery, a UNESCO World Heritage site founded in 1051, was seriously damaged in a direct attack, Tymur Tkachenko, the head of the capital’s military administration, said in a Telegram post.

“A Russian strike on the Kyiv-Pechersk Lavra set the Dormition Cathedral on fire – a church whose history dates back to the 11th century. And this is one of Russia’s most serious crimes against Christian culture to date,” Zelenskiy said on X.

As ⁠towering flames rose over the monastery, residents took shelter underground in the worst Russian attack on Ukraine since early June when drones and missiles killed more than 20 people and left more than 100 wounded.

Drones and missiles struck several high-rise apartment buildings and damaged electricity lines, leaving some 140,000 residents without power, according to Kyiv authorities. Authorities later said power had been restored to most residents.

Ukraine’s military on Monday morning said Russia had launched 70 missiles and 611 drones on Ukraine overnight and its air defense shot down 50 missiles and 582 drones of various types.

“Ballistic missiles remain a problem for us,” Air Force spokesperson Yuriy Ihnat said on national television. “Of the 34 ballistic missiles launched, only 15 were shot down, although that is a strong result.”

Four people were killed and 30 were injured, Tkachenko said.

“What more must the Kremlin Antichrist do for the world to realise that decisive action must be taken so that the Russian terror against Ukraine and the very principles of peace come to an end?” Metropolitan Epifaniy, head of the Orthodox Church of Ukraine, said on X.

Neighbouring Poland, an EU and NATO member, scrambled fighter jets on Monday against a possible airspace incursion, before recalling the alert and saying no sky violation had been recorded, its Armed Forces said in a post ⁠on X. Ukraine would be “urgently initiating” procedures within UNESCO and other international mechanisms to ensure “immediate and adequate responses to this state barbarism,” Foreign Minister Andrii Sybiha said on X in reference to the monastery attack, with the Estonian foreign minister Margus Tsahkna also condemning the Russian strikes.

Attacks on Ukraine’s regions, central Russia

Most of Ukraine’s territory was under air raid warnings in the early hours of Monday and Ukrainian drones were being repelled over Russia as both countries continued to exchange strikes.

Four emergency service rescuers and one municipal official were killed and at least another five injured after a second Russian strike hit Kharkiv, Ukraine’s second-largest city, Interior Minister Ihor Klymenko said on Telegram, with three people, including a child, wounded in ⁠Sumy, according to social media posts by local authorities.

Russia and Ukraine both deny deliberately attacking civilians. Reuters could not independently confirm the reports.

Ukraine has recently intensified attacks on Russian industrial and energy facilities, as it tries to deprive Moscow of revenues and hasten an end to the war.

On Monday, three people were killed and another three, including a 1-year-old child, were injured in a drone attack on the Russian city of Tula, an industrial cluster south of Moscow, the ⁠regional governor said in a Telegram post.

Ukraine also moved overnight to cut off the Black Sea Crimean peninsula, annexed by Russia in 2014 and already grappling with a fuel crisis, from further supplies by hitting two bridges connecting it to the Russian-controlled areas.

Before his conversation with Trump, Zelenskiy had proposed direct talks with Russian President Vladimir Putin for a ceasefire solution involving the US and Europe - something Britain, Germany and France supported but Putin rebuffed.

The ⁠Kremlin said on Sunday that Trump told the Russian leader that ending the conflict in Ukraine was vital and he was ready to help.

Progress towards a peace agreement in Ukraine has been slow, with US officials and mediators concentrating on the conflict in the Middle East. US and Iranian officials said on Sunday they had agreed on a peace framework to end their war, with the pact expected to be officially signed on Friday in Switzerland.