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.

Late on July 3 and into the early hours of July 4, Russia battered Ukraine with more than 500 drones and missiles in the most intense aerial attack of the war, surpassing the previous record set just days earlier on June 29.