Ukraine said Saturday it struck an airbase in Russia, which continued overnight to use hundreds of drones in its stepped-up bombing campaign. The fresh wave of attacks signal a breakthrough isn't expected anytime soon in efforts to end the more than three-year-old war.

Ukraine said it struck a Russian airbase on Saturday, while Russia continued to pound Ukraine with hundreds of drones overnight as part of a stepped-up bombing campaign that has further dashed hopes for a breakthrough in efforts to end the more than 3-year-old war.

As part of efforts to reduce the Russians' ability to launch airstrikes, units of the Ukrainian Unmanned Systems Forces, in cooperation with other components of the defence forces, struck the Scientific Research Institute of Applied Chemistry in Russia's Moscow Oblast on 4 July.