Ukrainian intelligence drones attacked an oil refinery and three military airfields in Russia. A Tu-22M3 bomber was damaged at the Olenya air base, according to RBC-Ukraine sources in the special services. On the night of July 27 and in the morning of the same day, Ukraine’s intelligence attacked the air base in Engels in the Saratov region, Dyagilevo air base in the Ryazan region, and Olenya air base in the Murmansk region. The attack by kamikaze drones also damaged an oil refinery in Ryazan. According to eyewitnesses, the first explosions at the Dyagilevo airfield occurred around 6 a.m. loca…