As a result of an operation by the Defense Intelligence of Ukraine on the night of May 1, the Ryazan oil refinery was hit by drones in Russia, according to sources in the special services. Drone attack on Ryazan oil refinery According to eyewitnesses, the first four explosions occurred at the plant at night around 2 a.m., after which a large-scale fire broke out on the refinery’s premises. At the same time, the local Ministry of Emergency Situations announced the danger of drones. The drone attack in the Ryazan region was confirmed by local governor Pavel Malkov. In addition, social media user…