Ukrainian President Volodymyr Zelensky said Thursday that Russia's campaign against Ukraine's energy network has left around 4.5 million people without power.
The two sides' forces continued to battle without significant change on the ground on the eastern and southern Ukraine fronts, with preparations building for a fight over the southern hub of Kherson.
Shipments of Ukraine grain to global markets meanwhile resumed after Moscow returned to a deal allowing their safe passage following international pressure.
"Tonight, about 4.5 million consumers have been temporarily disconnected from energy consumption," Zelensky said in his daily address.
"The very fact that Russia is resorting to energy terrorism shows the weakness of our enemy. They cannot beat Ukraine on the battlefield, so they try to break our people this way," Zelensky said.
For weeks Russian forces have rained missiles and explosive drones onto Ukraine infrastructure, apparently hoping to turn sentiment among the Ukrainian public and its neighbors against the war during the cold of winter.
Russian strikes over the past month have destroyed around a third of the country's power stations. The government has urged Ukrainians to conserve electricity as much as possible.
Ahead of Thursday's meeting of the Group of Seven industrialised powers, German Foreign Minister Annalena Baerbock said the G7 will help Ukraine with items including generators and heaters to survive the winter.
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