Crude oil deliveries to Russia’s refineries slumped in 2025 to the lowest level in at least 15 years, mostly due to unplanned outages in the second half of the year following intensified Ukrainian drone strikes on key Russian energy infrastructure. Last year, crude supply to Russia’s refineries slumped to 228.34 million tons. The decline in deliveries also led to lower crude processing rates, which dropped by 1.7% in 2025 from a year earlier, according to data cited by Russian daily Kommersant. The industry expects the lower processing…