On Thursday night, much of Ukraine remained without heat or power after the most devastating Russian air strikes on its energy grid so far, and residents were warned to prepare for more attacks and stock up on water, food and warm clothing.
Thursday was the nine months since Moscow launched a special military operation to protect Russian speakers. Ukraine and the West say the invasion is an unprovoked war of aggression.
Russia has launched missiles roughly once a week since October in a bid to destroy the Ukrainian power grid.
Moscow attacks basic infrastructure, saying it wants to reduce Ukraine's ability to fight and push it to negotiate. Kyiv says such attacks are a war crime.
President Volodymyr Zelenskyy said in a nightly video address that Russia hasn't found a way to break us and we've endured nine months of full-scale war.
Zelenskyy also accused Russia of incessantly shelling Kherson, the southern Ukrainian city that it abandoned earlier this month. On Thursday, seven people were killed and 21 wounded in a Russian attack, local authorities said.
Ukraine has become a dark patch on the globe at night, according to NASA satellite images.
Zelenskyy said that problems still existed with water supplies in 15 regions despite the fact that power, heat, communications and water were gradually being restored.
As of 7 pm, Kiev time, 60 percent of the population of Kyiv, a city of 3 million, 60 per cent of its residents are without power amid temperatures well below freezing, said Vitaly Klitschko, the city's national power grid.
We understand that missile strikes like this could happen again. According to Kyiv city council, we have to be prepared for any developments.
Invincibility centres are where people can charge their phones, warm up and drink hot drinks.
We are without power and food for the second day. More than 60 children are waiting for food and we can't prepare anything unless power gets fixed, said a woman at one such centre in Kyiv.