It seems it has started last night with Wagner now going full steam to Moscow. First aviation casualties already on tape. Reportedly two Mi-8MTPR downed near Rostov, one Mi-35 downed near Rostov, later another Mi-8 was seen burning in a field (probably not one of the other two, but that's not confirmed) and now also a movie of an An-26 going down in flames. Scary times... but whatever goes down in Russia cannot be used in Ukraine, so that's a good thing I guess.
And in other aviation news, Lukashenko has sent his CL-850 to Turkey and multiple biz jets have been seen flying out of Moscow in the direction of Turkey...