A major fire broke out at the Ust-Luga oil port in Russia’s Leningrad region following a large-scale Ukrainian drone attack overnight on March 25, the second critical Baltic Sea export hub to be set ablaze this week following a similar strike on the nearby Primorsk port on Monday. Ust-Luga port, one of Russia's largest multipurpose outlets on the Baltic Sea with capacity to handle approximately 700,000 barrels of oil per day, was sealed off after several oil storage reservoirs were set on fire. Russia’s Defense Ministry claimed…