Residents go to collect relief supplies in Sviatohirsk, the reclaimed Donetsk region in Ukraine.

(AFP)

[Central News Agency] Ukraine's Energy Minister Herman Halushchenko told CNN that 30% of the country's energy infrastructure was hit by Russia's successive missile attacks on Ukraine on the 10th and 11th.

"We want to pass this message on to our partners: we have to protect our airspace," Harushenko told CNN yesterday.

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He also said that Russia disregards international regulations and that "they don't care about any kind of international agreement or pact".

Ukrainian authorities yesterday called on people not to use appliances such as ovens and washing machines to save electricity.

Millions of people faced power outages after Russia launched its biggest attack on Ukraine's energy grid on Tuesday.

At least 19 people were killed in Russia's largest airstrike in Ukraine, forcing thousands of Ukrainians into air raid shelters and damaging power facilities in hundreds of villages and towns.

Moscow hawks praised it as a turning point in the Russian-Ukrainian war, demonstrating Russia's determination to launch a "special military operation" against Ukraine.

Retired U.S. Army Lieutenant General and former U.S. Army Commander in Europe Hodges

(Ben Hodges) pointed out that even after the 10th missile attack, Ukraine clearly still has "irreversible kinetic energy" on the battlefield.

"Russia's logistics system is exhausted, and no Russian wants to fight for (Russian President) Vladimir Putin's Ukraine war," he tweeted.