Russian authorities reported intercepting 376 Ukrainian drones overnight, as Kyiv continues its campaign targeting energy infrastructure across Russian territory.
The defense ministry's figures underscore the scale of the aerial assault, which has increasingly focused on oil refineries and storage facilities in an effort to degrade Moscow's war financing capabilities.
The persistent threat to Russian energy assets remains a key driver for global oil markets.
Brent crude has maintained elevated levels as traders price in the risk of further supply disruptions from strikes on major refining hubs.
The market's reaction reflects growing concern that sustained damage to Russia's export capacity could tighten global supplies, particularly if attacks succeed in taking significant offline capacity.
This development follows a series of high-profile strikes on Russian energy infrastructure in recent weeks.