Ukraine’s General Staff claimed a strike on Rosneft PJSC’s refinery in Ryazan, one of the largest in Russia, as part of a campaign to reduce Russia’s air attack capabilities.

Russia unleashed a major missile and drone barrage on Kyiv early Friday, killing six people, leaving gaping holes in apartment buildings and starting fires as the sound of explosions boomed across the...

The new drones are built on a domestically developed technology known as “Octopus.”