Drones that disappear from radars before reaching their targets are usually decoys. Russia launches them alongside real drones to overwhelm Ukraine's air defense. Russia also launched four ballistic missiles of either the Iskander-M or the North Korean KN-23 model in the early hours of Jan. 18, with two of them downed by Ukraine's Air Force.Fallen wreckage from the downed missiles killed four people and injured at least three others in Kyiv, according to local authorities.The attack damaged a water pipeline, an administrative building, a business center, a store, and cars, the State Emergency Service said. The glass entrance to the Lukianivska metro station and the neighboring McDonald's building were also damaged.A woman walks past a damaged McDonald's fast-food restaurant following a Russian missile attack on Kyiv, on Jan.