Russia is deliberately trying to increase the number of civilian victims, disrupt life, spread fear, and damage Ukraine's infrastructure," Ukraine Prime Minister Yulia Svyrydenko said on X.Ukraine has destroyed 515 out of 542 drones and 26 out of 37 missiles launched by Russia since Thursday evening, Ukraine's air force said on the social media app, Telegram."We can see that the enemy is using new routes, new drones which they are constantly modernising, and new tactics," air force spokesman Yurii Ihnat said on state television on Friday.In the Kyiv region, a veterinary clinic was damaged in the strike alongside private houses, residential and administrative buildings Around 20 animals were killed, governor Mykola Kalashnyk said.In Zhytomyr region, 18 buildings - including houses - were destroyed and over 100 were damaged, authorities said.Poland has scrambled fighter jets even though there was no record of Polish airspace having been violated, its military said.In the northeastern region of Kharkiv, two people were killed, and over two dozen others were injured in missile, bomb and drone attacks over the past 24 hours, according to the region's governor, Oleh Syniehubov."The current series of strikes has been perhaps the most intense since the start of the war and certainly the heaviest since the beginning of the year," Kharkiv mayor, Ihor Terekhov said.On Saturday, Ukraine retaliated and launched a drone and missile attack on southern Russia killing at least one person, injuring four others, and sparking a blaze on a foreign-flagged vessel