Large-scale Russian drone strikes on Sunday injured three civilians in Kyiv and at least two in Kharkiv, Ukraine’s second-largest city.

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.

Russia's Defence Ministry, in a report on Telegram, said air defence units had destroyed 48 Ukrainian drones in a period of just over five hours into Saturday evening. Those included five drones in the region surrounding Moscow, two of which were headed for the capital.