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.

Waves of drones and missiles targeted Kyiv overnight in the largest aerial assault since Russia’s invasion of Ukraine began more than three years ago, officials said Friday, amid a renewed Russian push to capture more of its neighbor’s land.