L’Ucraina usa palloncini per confondere le difese aeree russe durante gli attacchi di droni a Mosca e Tatarstan

Just a thought – the reported payload might be water ballast, since a controllable height would be important for whatever other functions the balloon has. Bomber, decoy, observer, mother ship, relay station…
Given the prevailing winds, the Russians are not likely to get much out of this idea. .