Ukraine continues to cripple Russia's energy sector by hitting numerous oil refineries, depots, chemical plants, and more with drones.

A drone attack overnight on Jan. 14 caused damage to an industrial facility in the city of Engels, located in Russia's Saratov region. Engels lies around 600 kilometers (370 miles) from the front lines in Ukraine.

Ukraine launched waves of long-range strikes, including its ATACMS and Storm Shadow missiles, at targets inside Russia.

Europe warns its airlines to stay away through next summer, as Ukraine turns skies of western Russia into a battlefield.

Kyiv targeted Russian factories developing weapons, an oil depot, a refinery and air defense systems, a Ukrainian official said.

Roman Busargin, Saratov regional governor ... while Ukraine will likely plug away with further efforts to damage Russia's oil facilities deep into Russian territory.

Located in Saratov Oblast, over 750 kilometers from the Ukrainian border, Engels airbase is home to Russian heavy bombers.

Ukrainian drone attacks are typically focused on the areas directly along the Ukraine-Russia border, with some targeting regions further into Russia. Saratov is located in southwestern Russia about 450 kilometers from Ukraine.

The fire at the oil depot in the Liskinsky district of Voronezh Oblast, Russia, which was attacked by drones earlier, was extinguished all night and as of the morning, the firefighting is ongoing, the governor of the oblast,

Moscow say Kyiv fired six US-made ATACMS ballistic missiles, six British Storm Shadow cruise missiles and at least 146 drones

Unknown drones attacked an oil depot in the Russian Federation on the evening of January 17. This time, it was in the Kaluga region, according to Russian Telegram channels. It is reported that the drone attempted to attack an industrial enterprise in the city of Lyudinovo.