Ukraine’s UJ-22 Airborne drone Footage of a drone exploding over the dome of the Senate in the walled Kremlin citadel – the symbolic centre of Russian power – raises questions about the effectiveness of Russia's air defences May 3: Video footage shows two objects approaching Kremlin and one exploding UJ-22 Airborne drone Manufacturer: Ukrjet Range: 800km Maximum speed: 160km/h Maximum ceiling: 6,000m Payload: Up to 20kg Four 82mm mortar mines or six RPG-7 rocket-propelled grenades Length: 3.3m Wingspan: 4.6m Camera: 64-megapixel Imagery enables reconnaissance and surveillance missions Mortars Camera DRONE STRIKES BY UKRAINE Dec 5, 26: Drone attacks hit Engels and Dyagilevo airbases Feb 6: Drone explodes outside city of Kaluga Feb 27: Three drones target Belgorod, hitting buildings, cars Feb 28: UJ-22 attack on Gazprom facility at Gubastovo, drone hits oil refinery in Tuapse Mar 26: Drone shot down over residential area of Kireyevsk Kiev UKRAINE CRIMEA Moscow Gubastovo Dyagilevo Kireyevsk Kaluga Engels Belgorod RUSSIA Russian control Tuapse 100km 60 miles Sources: ABC News, Reuters, Ukrjet, UPI Picture: YouTube © GRAPHIC NEWS