Thank you all, for your help.
PLF101 had no official status (HEAD), but people at the airport had an idea WHO is coming.
Alerady been discussed. It was a HEAD/gov't flight and they knew it. It's in the ATC transcripts.
As was already said, we had 4/4. All four approaches were made below minima and not exactly by the book. Smolensk ATC was letting go the crews, thus reducing the error margin. It's nicely visible especially during the second Il-76 approach.
Even during PAR, it is NOT up to ATCO to command go-arround
Wasn't exactly PAR approaches and anyway, excepted for Yak, we had "landing conditionally" which by the book means going to MDA and if at that altitude the crew confirms seeing the RWY, it's an authorisation to land from ATC, if not, it's GA.
I will later copy and translate the most interesting part of the ATC transcript.
Arrakis