Ukrainian President Volodymyr Zelenskyy said that a state of emergency was being declared for Ukraine's energy sector, after repeated Russian attacks destroyed electricity and heat infrastructure. Zelenskyy said he asked the government to review curfew restrictions during this extremely cold weather. Kateryna Pop, spokeswoman for the Kyiv City Military Administration, said 471 buildings in Ukraine's capital remained without heat on Wednesday as temperatures again dropped to minus 19 degrees Celsius (-2.2 Fahrenheit) overnight, according to Ukraine's Ukrinform news agency.