The overnight attack on Russian refineries was effective. In total, these three refineries process approximately 25 million tons of oil per year, which is almost 10% of all Russian oil refining. Read also: Drone attacks spark fires at two refineries in Russia’s Samara Oblast “The SBU continues to implement a strategy to undermine Russia’s economic potential, which allows it to wage war in Ukraine,” the source said. “The ‘pop’ season at Russian refineries is in full swing. Each such strike reduces the flow of petrodollars that feeds the Russian war economy.” Read also: Petrochemical plant hit i…