@TruthSandwich

One question is that, if Prigozhin had left the country (we know he did go to Belarus and possibly Africa recently), then how did he get back in to Russia in order to be on what, seems to be an internal private jet journey, surely the Russian border is no so porous is that someone who is MOST wanted can just get trough,

Even private jets can't enter any air space without someone noticing and challenging what that plane is doing, in this case over Russian airspace.