good eveningmism i m anderson cooper in new york. this is special coverage of the extraordinary and still confusing events we have been reporting on for the past 24 hours out of russia and of what will be a critical day ahead for vladimir putin. what we witnessed over the last 24 hours appears to have been the most serious threat to putin s hold on power in decades. at this hour we know a lot, but it s important to point out there is a lot that is not known. for instance, what will be the fate of the man in the back seat of this suv, prigozhin, cheered by some as he appeared to be leaving the southern russian town, his mercenary force had just occupy. this video taken just hours after he called off his mercenaries from their push toward moscow and agreed to a deal brokered by russia s ally, belarus. translator: therefore realizing all the responsibility for the fact that russian blood will be shed from one of the sides, we turn our columns around and leave in the opposite d