Ukrainian officials reported power cuts and water supply outages in multiple regions, including parts of the capital, Kyiv.
Russia launched a massive aerial assault on Ukraine during the Monday morning rush hour, unleashing more than 100 missiles and around 100 attack drones.
The coordinated strike targeted energy facilities across the nation, killed at least five people and causing widespread disruptions.
Ukrainian officials reported power cuts and water supply outages in multiple regions, including parts of the capital, Kyiv.
The attack, which occurred 2-1/2 years into Russia's full-scale invasion, focused on critical infrastructure in at least 10 regions, according to local authorities.
Reuters reports that Russia launched over 100 missiles and around 100 attack drones at Ukraine during the Monday morning rush hour, killing at least five people and striking energy facilities across the country, officials reported.
Power outages and water supply disruptions were reported in multiple locations, including parts of Kyiv.
Authorities noted that the attack, 2.5 years into Russia's full-scale invasion, targeted power and critical infrastructure in at least 10 regions.
In March, Russia significantly increased its strikes on Ukraine's power grid, which Kyiv claims is part of a strategic effort to weaken the system before winter, when electricity and heating are crucial.
Monday's missile and drone barrage was Russia's most intense in weeks. It occurred as Ukraine reported gains in a significant cross-border operation into Russia's southern Kursk region, while Russian forces made incremental progress in eastern Ukraine, nearing the strategic transport hub of Pokrovsk.
"This was one of the largest combined strikes, with more than a hundred missiles of various types and about a hundred Shahed drones," President Volodymyr Zelenskiy stated on Telegram. "Like most previous Russian strikes, this one was just as insidious, targeting critical civilian infrastructure."
Prime Minister Denys Shmyhal said that 15 regions had sustained damage, while Zelenskiy indicated that the energy sector had suffered "significant damage."
Ukraine, which lacked powerful long-range weapons at the start of the invasion, has since developed multiple models of long-range attack drones, which it has used to strike deep inside Russian territory, targeting oil refineries and military airfields. Over the weekend, Zelenskiy announced that Ukraine had developed a new "drone missile" that is more powerful and faster than existing models in Kyiv's arsenal.
Russia's defense ministry, as cited by the Interfax news agency, claimed on Monday that its forces used high-precision weapons to strike crucial energy infrastructure in Ukraine that it alleged supports the military-industrial complex.
In response to the Russian missile and drone assault, which hit western regions of Ukraine near the NATO member state, Poland's military and those of its allies were put on alert.
Regions with targeted power or critical infrastructure included Rivne and Volyn in the northwest, Khmelnytskyi in the southwest, Zhytomyr in the north, Lviv in the west, Dnipropetrovsk, Kirovohrad, and Vinnytsia in central Ukraine, Zaporizhzhia in the southeast, and Odesa in the south. Officials reported damage to facilities in at least seven of these regions.
Moldova, whose power grid is connected to Ukraine's, reported minor disruptions to its network.
In the northeastern Sumy region, from where Ukraine launched its incursion into Russia on August 6, officials said a railway infrastructure facility had been struck, without providing further details.