The videos of Ukrainian Bayraktar TB2 attacks that have been allowed to the public show Ukraine concentrating on Russia's Buk anti-air systems. These are large missile carriers with 4 big missile tubes. No way to tell if these are S-300 or S-400.<p>There are supposed to be larger two missile carriers as well, but I haven't spotted any of those; seems like Russia either can't spare those or didn't think they'd need them.<p>Anyhow, the fact that Ukraine can still employ these UAVs means that Russian air superiority is still not complete. Drones are easy targets for Russian warplanes.