A Russian missile strike on a nine-story Kyiv apartment building was a sign that more pressure must be applied on Moscow to agree to a ceasefire, Ukrainian President Volodymyr Zelenskyy said Thursday, as Moscow intensifies attacks in the war, Associated Press reported.

The drone and missile attack on Kyiv early Tuesday, the deadliest assault on the capital this year, killed 28 people across the city and wounded 142 others, Kyiv Military Administration head Tymur Tkachenko said. 

Zelenskyy, along with the head of the presidential office, Andrii Yermak, and Interior Minister Ihor Klymenko, visited the site of the apartment building in Kyiv’s Solomianskyi district on Thursday morning, laying flowers and paying tribute to the 23 people who died there after a direct hit by a missile brought down the structure.

“This attack is a reminder to the world that Russia rejects a ceasefire and chooses killing,” Zelenskyy wrote on Telegram, and thanked Ukraine’s partners who he said are ready to pressure Russia to “feel the real cost of the war," according to Associated Press.