Poland activated its air defences overnight as Russian missiles and drones hit targets in western Ukraine, particularly the Volyn region which borders Poland. Governor Roman Romaniuk reported that strikes cut electricity to 370,000 people and injured two people. In the eastern city of Kharkiv, a drone attack killed three people and injured five, according to the regional governor. In central Ukraine, police said strikes on an apartment block in Uman caused a similar number of injuries.
Private energy company DTEK announced emergency power cuts in Kyiv as a result of the ongoing bombardment.
On the Russian side, officials said air defences intercepted a Ukrainian drone attack targeting a heating plant in the Vladimir region. Russia reported shooting down 644 Ukrainian drones overnight, 94 of which were headed for Moscow. Moscow's four airports and St Petersburg's Pulkovo Airport suspended operations, according to an Al Jazeera correspondent in Moscow. Ukrainian attacks also killed two people in the Russian-controlled Luhansk region, the Russian-installed governor said.
Concern over Russian activity near NATO territory has grown since the summer, with Romania, Moldova, Poland and the Baltic states reporting numerous drone intrusions into their airspace and waters. In recent weeks, drones have struck at least seven cargo ships in Romanian and Bulgarian territorial waters in the Black Sea, killing two people with at least 25 still reported missing. Bulgaria's defence minister said on Friday that Sofia has requested help from NATO to bolster its defences.
Ukrainian strikes on Russian energy infrastructure have drawn criticism from US President Donald Trump, who has blamed Ukraine for pushing up global oil prices.