Soviet-era Stryzh recon drone, modernized by Ukraine, likely behind explosion near Kaluga, experts claim
Drone falls and explodes in Kaluga Oblast in Russia | Ukrainska Pravda
Russia: drone crashes into a military base, according to the authorities it had left Ukraine - Agenzia Nova
Drones Strike Russian Oil and Gas Facilities, Ukraine Border Regions - The Moscow Times
Russian authorities investigate mysterious drone crashes on Kaluga Oblast highway
Russia destroys drone over Kaluga region | Al Arabiya English
Drone Explodes Less Than 100 Miles From Moscow as Fear of Strikes Grows
Two drones crash in Russia's Kaluga region: local governor
Two drones crash in Russia's Kaluga region: local governor - World - Business Recorder
Ukraine's drone attack thwarted in Russia's Kaluga region
Drone crashes in Kaluga region — governor - Emergencies - TASS
Russia shoots down two armed drones headed for Moscow | Russia-Ukraine war News | Al Jazeera
Russia's air defense shoots down six drones in Kaluga - Prensa Latina
Russia Says Thwarted Ukraine Drone Attack in Moscow Region - The Moscow Times
Two drones have crashed in the Kaluga region of Russia
Russian missile defenses shoot down three Ukrainian drones above Kaluga Region
Russian air defense forces shoot down 6 drones in Kaluga
Russia says 20 Ukrainian drones destroyed over Crimea | Russia-Ukraine war News | Al Jazeera
UAV falls in Russia's Kaluga region
Russia says Ukraine fired missile towards Moscow, targeted Crimea with drone swarm | South China Morning Post
Drone explodes outside Russian city of Kaluga - governor - anews
Drone Explodes Near Russian City of Kaluga
 "Russia Guns Down Two Drones Near Moscow: Report")