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 surging defence industry, bolstered by an expanded missile plant in Votkinsk and rapidly expanding supply chains, could soon allow Russia to fire 1,000 missiles and drones at Ukrainian cities in a single night.