A major oil refinery in Russia’s Samara region has suspended operations following a Ukrainian drone attack on Wednesday. The Kuibyshev refinery, a significant processing facility, reportedly shut down both of its primary crude distillation units, CDU-4 and CDU-5. Each unit has a processing capacity of approximately 10,000 metric tons. Industry sources cited by Reuters confirmed the disruption, indicating a substantial impact on Russia’s refining capabilities. The attack highlights the escalating targeting of Russian energy infrastructure during the ongoing conflict. Details regarding the extent of the damage are currently limited, but the shutdown is expected to affect regional fuel supplies. This incident represents a further challenge to Russia’s oil production and export capacity.