Authorities in the Russian region of Tatarstan on May 15 shut down two major airports -- one in the region's capital, Kazan, and another in the city of Nizhnekamsk -- for several hours "for security reasons" following a drone attack. The Russian Defense Ministry said that "a Ukrainian drone of a plane type" was shot down over Tatarstan at 7:30 a.m. local time. Last month, drones hit an oil refinery in Tatarstan and a dormitory in the Alabuga special economic zone in Nizhnekamsk that hosts more than 20 industrial enterprises, including chemical, mechanical engineering, and metal treatment factories. It also reportedly houses a facility producing drones. To read the original story by RFE/RL's Idel.Realities, click here.