KIEV, May 28 (Xinhua) -- Ukrainian forces struck the Tuapse oil refinery in Russia's Krasnodar region overnight on Wednesday, the General Staff of the Ukrainian Armed Forces said Thursday.
According to the statement, fire and smoke were observed at the facility, while the extent of the damage is still being assessed.
The refinery is one of the largest oil processing facilities in southern Russia, with an annual processing capacity of about 12 million tons of oil, it said. ■