Ukraine's SSU said deep strikes hit oil facilities in Bashkortostan, Ulyanovsk and Kaluga, plus military targets at Belbek and Saky airfields in occupied Crimea.
The attacks set tank farms ablaze at the Subkhankulovo dispatch station about 1,350 kilometers from Ukraine and the Novospassky mini refinery about 900 kilometers away, while also damaging a fuel storage tank and a Nebo-U radar station.
The SSU said the operations were ordered under President Volodymyr Zelensky's directive to cut Russia's military and economic potential through long-range attacks on energy and defense infrastructure.
Zelensky had earlier confirmed strikes on a key military enterprise in Kirov and on an oil facility 1,350 kilometers from the Ukrainian border, underscoring Kyiv's widening reach inside Russia.