"Ukraine was brutally attacked on Christmas Day," said Keith Kellogg, President-elect Donald Trump's pick for Ukraine and Russia envoy.

DTEK, Ukraine’s largest private energy company, reported power outages across large areas of the country after Russia fired missiles against DTEK power stations in strikes on Christmas day. DTEK 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.