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

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

Ukrainian drones attacked the Russian cities of Saratov and Engels during the night, damaging an industrial facility, according to Roman Busargin, the governor of the Saratov region.

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.

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

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

A Russian strike killed four people in the Ukrainian capital, Kyiv, city officials said on Saturday, in what the country's foreign minister called a "heinous" attack with ballistic missiles.

A Ukrainian drone attack on Friday sparked a fire at an industrial site in Russia some 170 kilometres (105 miles) from the border, authorities said.

The Kombinat Kristal oil depot in Engels in Russia’s Saratov Oblast is ablaze for the fourth day in a row, having been re-attacked by Ukrainian drones on the night of 13-14 January. In addition, a fire at the oil depot in Liski in Russia’s Voronezh Oblast,