Ukrainian soldiers said the use of medium-range drones has become more common as key targets move farther back.

The threat of drones was a constant, heavy presence. You hear a low hum in the sky,” Jolie wrote on Instagram on Nov. 9.

Western analysts say the attacks on energy infrastructure so far have had a serious — but not crippling — effect. Ukrainian drones have repeatedly hit 16 major Russian refineries, representing about 38% of the country’s nominal refining capacity, according to a recent review by the Carnegie Endowment, a U.S.-based think tank.

On the night of November 9, Russian forces attacked the first large biomass-powered thermal power plant in Ukraine, reports Andriy Grinenko, Founder, Chairman of the Supervisory Board of Clear Energy Group.

A Ukrainian drone attack briefly disrupted power and heating in Russia's Voronezh city overnight. While electronic warfare systems downed several drones, a utility facility fire caused temporary outages.

At least three people were killed and 12 others injured in Russian strikes on Dnipro, according to Ukraine’s emergency officials.