On the early morning of December 5, 2025, Ukrainian forces carried out a series of drone strikes deep inside Russian territory, targeting key government offices and critical oil facilities.
A high-rise building hosting several Chechen government offices, including the Chechen Security Council, the Regional Election Commission, the Audit Chamber, the Ministry of Tourism, the Department of Relations with Religious and Public Organisations, and the Regional Ministry of Justice, suffered significant structural damage.
The strike caused multiple upper-floor facades to blow out, fires to ignite, and windows to shatter, although no casualties were reported. The building is located approximately 800 meters from Ramzan Kadyrov’s official residence and near a local FSB branch.
Ukrainian Drones Hit Key Russian Oil Targets
Additional heavy strikes were reported on Russian oil infrastructure.
The Syzran Oil Refinery in the Samara region, which has an annual processing capacity of 7–8.9 million tons of crude oil and supports the Russian military, sustained damage to one of its primary processing units.
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Furthermore, the Temryuk seaport in Krasnodar Krai, handling general, liquid, bulk, and dry cargo for military supply chains, was targeted.
Damage from a prior strike on the Saratov Oil Refinery has been confirmed, with its primary oil treatment unit completely shut down, forcing operations to fall below 50% of design capacity.
Russian Air Defences Downed 76 Ukrainian Drones Earlier
On December 4, Russian air defence forces reportedly intercepted and shot down 76 Ukrainian drones overnight across multiple Russian regions and the Black Sea, the Russian Defence Ministry reported.
According to TASS, a Russian news agency, a woman was injured as a result of falling debris from a downed drone in one of the districts of the Voronezh Region.
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An apartment building, a non-residential premises, and two passenger cars were also affected.
Scale of the Russian Drone Interception
In a compilation released by TASS, 21 drones were neutralized over the territory of the Republic of Crimea, 16 over the Rostov Region, 14 over the Stavropol Region, seven UAVs over the Belgorod Region, four over the Bryansk Region, three over the Voronezh Region, two UAVs each over the Oryol, Ryazan, and Tula Regions, and one each over the Moscow Region, the Krasnodar Region, Lipetsk, Nizhny Novgorod, and the waters of the Black Sea.
Governor Alexander Gusev of the Voronezh Region reported that the injured woman declined hospitalisation after receiving medical assistance and has returned home.
According to reports, Russian personnel losses reached 1,140, consistent with the high tempo of operations observed in recent days.
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