What’s This UFO Thing In Ukraine?

One report mentions unidentified aircrafts. Are they military objects or something else?

“The Arrival”, more nfts at https://rarible.com/QC

The Ukraine’s largest astronomical observatory has compiled a report on what it detected in the skies above Kiev, speaking of a swarm of unidentified flying objects. This is exactly the meaning of the term UFO. But are they military objects linked to the now long conflict or something else?