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.

Ukraine said Saturday it struck a Russian airbase that military officials called a "home base" of some fighter jets.

S, and Su-30SM are frontline Russian multirole fighter jets used for both air-to-air combat and precision strikes on ground targets.