An apparent drone attack on Moscow led to flights being delayed at one of the city's international airports.
The defense ministry said all the drones were disabled, and no injuries were reported.
But in May, after a previous drone attack on Moscow, one expert told Insider it looked to be a case of the Ukrainian government giving Russia "a taste of its own medicine."
Ukraine has acknowledged carrying out drone strikes against military targets in its own internationally recognized territory.
Earlier this year, a Ukrainian military intelligence official said one of his government's drone strikes had targeted a Russia oil facility in occupied Crimea.
Persons:
—, Sergei Sobyanin, Maria Zakharova, Russia's, Volodymyr Zelenskyy
Organizations:
Service, Moscow, Vnukovo Airport, TASS, Kyiv
Locations:
Moscow, Ukraine, Kubinka, Russia, Ukrainian, Crimea