Ukraine struck a major oil refinery in Moscow and other targets across Russia in one of its largest aerial barrages since the start of Russia’s invasion, expanding a campaign of drone attacks on energy facilities and further highlighting the vulnerability of strategic infrastructure deep inside Russia.

Russia’s defense ministry said on Sunday that its air defenses had intercepted or shot down more than 150 drones in 15 regions. At least one of them detonated over a major refinery in Moscow that is owned by state energy giant Gazprom, officials said, while another hit a power station in the neighboring Tver region.