Authorities in Russia's Republic of Tatarstan on May 23 suspended operations at several industrial facilities and airports in Kazan, the capital, and Nizhnekamsk "for security reasons" over "possible drone attacks." Last week, the two airports were shut for several hours after authorities said "a Ukrainian drone" was shot down over Tatarstan on May 15. 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.