Ukraine said it struck a Russian air base on Saturday, while Russia continued to attack Ukraine with hundreds of drones overnight as part of a stepped-up bombing campaign that has dashed hopes for a breakthrough in efforts to end the more than 3-year-old war.

Ukraine's President Volodymyr Zelenskiy said on Wednesday that Russia's largest drone attack overnight on Ukraine showed the need for 'biting' sanctions on Russia and secondary punitive measures against Russian oil.

The night was punctuated with the chilling whine of approaching drones that slammed into residential areas, exploded and sent balls of orange flames into the dark during the 10-hour barrage.