Kyiv locals urged to flee the city if they can as half the city is left without electricity in -16 temperatures and Ukraine warns it will 'kill 50,000 Russians a-month' in bitter winter warfare

"As of this morning, about 4,000 buildings in Kyiv are still without heat, and nearly 60 percent of the capital is without electricity," Zelenskiy wrote on X. The temperature in the capital was minus 12 degrees Celsius (10.4 degrees Fahrenheit) on Wednesday morning, although it climbed slightly by the afternoon.

Klitschko's press service told the Kyiv Independent that the 600,000 number was calculated from mobile phone billing data.

An intense wave of Russian drone attacks has left hundreds of thousands of households in the Kyiv region without power, Ukrainian President Volodymyr Zelensky said Tuesday, as temperatures fall well below freezing.

Moscow has stepped up a winter campaign against Ukraine’s battered ​energy system while grinding forward on the battlefield.

Ukrainian President Volodymyr Zelenskyy says over 1 million people in Kyiv are without electricity due to Russian strikes - Anadolu Ajansı

Russia attacked Kyiv with ballistic missiles overnight on Jan. 20, as the city faces freezing temperatures and a deepening energy crisis. Kyiv is currently facing its most difficult winter of Russia's full-scale war,

The attack knocked out heating to more than 5,600 apartment buildings in the capital, Kyiv Mayor Vitali Klitschko said. Nearly 80% of the affected buildings had recently had their heating supply restored after a major Russian barrage on Jan.