Russia has enough missiles to carry out yet more heavy strikes against Ukraine, President Volodymyr Zelensky has said, following a wave of Russian attacks.
Engineers are continuing work to restore electricity after Friday's massive strikes using 76 missiles.
The attacks have targeted civilian infrastructure, as temperatures drop below zero in many regions. Parts of the Ukrainian capital remained without power and heating on Saturday
Russia's President Vladimir Putin has been consulting his military commanders about the future of the war.
The Kremlin says Mr Putin spent the whole of Friday at the headquarters of Russia's military operation.
Kyiv has accused Moscow of using winter as a weapon by targeting essential facilities as temperatures drop.
But Russia's president earlier this month vowed to continue to batter Ukraine's infrastructure, saying criticism of Russia's strikes would not interfere with its "combat missions".