Kharkiv is under massive rocket fire" with "ballistic missiles heading towards the city" mayor Igor Terekhov warned.

Russia attacked Ukraine's energy system and some cities in an "inhuman" Christmas Day assault, Ukraine's President Volodymyr Zelenskyy said.

U.S. President Joe Biden said on Wednesday he had asked the Defense Department to continue its surge of weapons deliveries to Ukraine, after condemning Russia's Christmas Day attack on Ukraine's energy system and some of its cities.

KYIV, Ukraine — Russia launched a massive missile and drone barrage targeting Ukraine's energy infrastructure on Wednesday, striking a thermal power plant and prompting Ukrainians to take shelter in metro stations on Christmas morning.

Russia launched an “inhumane” attack on Ukraine’s energy infrastructure, causing blackouts in several regions and explosions across the country on Christmas morning, Ukrainian President Volodymyr Zelensky said Wednesday.

Russia launched a major Christmas Day missile and drone attack on Ukrainian cities, targeting the country’s energy infrastructure.

Russia attacked Ukraine's energy system and cities in its eastern region with cruise and ballistic missiles on Wednesday morning, Ukraine's energy minister and local officials said. At least six people were wounded in a missile attack on Kharkiv in northeastern Ukraine on Wednesday morning,