Prolonged winter power and heating outages left millions of Ukrainian civilians in unheated homes as outdoor temperatures dropped as low as minus 30 degrees Celsius

From the articleUN panel: Russia is committing crimes against humanity by targeting civilians in Ukraine | CNNAlso in Russia's assault on Ukraine's energy grid is a war crime, UN says, Russia committed war crimes in Ukraine by attacking energy grid: UN-backed inquiry, Russian attacks on Ukraine’s energy infra amount to ‘war crimes’—UN report