Explosive night was in several regions of Russia. Ukrainian drones targeted a Russian military airfield, oil refinery, and power substation, according to an RBC-Ukraine source. It was a joint operation of the Security Service and Defense Intelligence. As a result of the attack, explosions were heard at the Akhtubinsk military base in the Astrakhan region, at the 500 power substation in the Rostov region, and at the oil depot in Kalach-na-Donu in the Volgograd region. During the drone attack on the military airfield, Russian Telegram channels claimed that the Pantsir SAM was allegedly activated…