Russia’s defence ministry on Tuesday said its forces had downed 30 Ukrainian drones fired overnight in border areas between the two countries.

« The anti-air defence systems destroyed 29 drones in the Belgorod region and one in Voronezh, » it said on Telegram.

Ukrainian missile strikes Sunday on the Crimean peninsula, annexed by Russia in 2014, killed four people including two children and wounded 150 others, according to Moscow-appointed regional officials.

Ukraine, which has been facing a Russian offensive for over two years, regularly attacks Russian regions and Moscow annexed territory, pledging to avenge bombardments on its territory.