Ukraine said Saturday it struck a Russian airbase in the Voronezh region. Russia has not confirmed the attack.

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.

KYIV, Ukraine -- Russia targeted Ukraine overnight with 322 drones, 292 of which were "neutralized" by being either shot down or supressed by other means, according to the Ukrainian air force. Eleven people, including two children, were injured in the Kharkiv area, in a drone strike overnight there, according to local emergency services.

Dutch and German intelligence agencies have gathered evidence of widespread Russian use of banned chemical weapons in Ukraine, they said on Friday.