Moscow targeted regions across Ukraine with some 101 drones, Zelenskyy said. Russia on Friday had launched its largest overnight strike of the war, firing 539 drones and around a dozen missiles, according to Ukraine's air force.

With their dense mesh, the nets can tangle drone propellers. It’s a simple but effective countermeasure that reflects how low-tech means can blunt high-tech weapons in the war.

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.