Five people have died and tens of thousands have been left without power in Ukraine after intense Russian missile and drone attacks overnight, Ukrainian President Volodymyr Zelensky has said.
Ukraine's neighbour Poland scrambled fighter jets in order to ensure the safety of Polish airspace, the Polish military confirmed. Allied Nato aircraft were also deployed.
Four members of one family, including a 15-year-old girl, were killed by a strike in the village of Lapaivka as attacks focused on the nearby western city of Lviv.
Russia's defence ministry said it had successfully carried out a "massive" strike on Ukrainian military and infrastructure targets.
Another family member was injured, as were two neighbours, in the strike that killed their relatives in Lapaivka.
One person also died in Zaporizhzhia. Zelensky said Russia fired more than 50 missiles and around 500 attack drones.
Lviv endured several hours of strikes, leading to the suspension of public transport services and the cutting of electrical supplies.
The Ivano-Frankivsk, Chernihiv, Sumy, Kharkiv, Kherson, Odesa, and Kirovohrad regions were also targeted as well as Lviv and Zaporizhzhia, according to Zelensky.
He added: "We need more protection and faster implementation of all defense agreements, especially on air defense, to deprive this aerial terror of any meaning.
"A unilateral ceasefire in the skies is possible - and it is precisely that which could open the way to real diplomacy."
The Russian assaults came days after a US official said the US would support Ukraine launching deep strikes inside Russian territory.
"Polish and allied aircraft are operating in our airspace, while ground-based air defence and radar reconnaissance systems have been brought to the highest state of readiness," Poland's operational command said in a post on X.
At 05:10 (02:10 GMT), all of Ukraine was under air raid alerts following Ukrainian Air Force warnings of Russian missile and drone attacks.
Russia continues to focus its attacks on Ukraine's energy infrastructure as winter approaches.
Kyiv's energy ministry said overnight attacks caused damage in Zaporizhzhia, Chernihiv and Sumy.
In Zaporizhzhia, Russia's overnight attack left "more than 73,000 consumers... without electricity" after a power plant was struck, according to Ivan Fedorov, the regional governor.
A woman was killed and several others injured in the region.
A 16-year-old girl was among those receiving medical assistance, Fedorov added, posting photos apparently showing a partly destroyed multi-storey block and a burnt-out car from the site of the attack.
Emergency outages were implemented in Chernihiv and Sumy, the energy ministry added.
Lviv's mayor Andriy Sadovyi said part of the city - 70 km (43 miles) from the border with Poland - had no power, adding that city's air defence systems were engaged heavily in repelling first a drone and then a Russian missile attack.
