The Ryazan oil refinery, owned by the Russian state-controlled company Rosneft, ceased operations following a drone attack on September 6th. Damage to the refinery’s units is substantial, and officials estimate repairs will extend for several weeks. This disruption impacts Russia’s oil processing capacity. The attack highlights continued vulnerabilities within Russia's energy infrastructure. Rosneft has not yet provided a detailed assessment of the extent of the damage or the specific units affected. The incident raises concerns about potential fuel supply disruptions. Further assessments are underway to determine the full impact on regional and national energy markets.