Wagner Group are mercenaries. The Chechens are taking money from Russia to fight and that makes them mercs, too. The Russians? If they want to kill prisoners then they need to die too.
The problem with neo-Nazi thugs is that they are proud of their warcrimes filming and sharing a lot of them, and the international media convinced them that they are the good guys and supports their dids as long as the wrong people are killed.
Show me Chechens acting in the same manner. I guess you won’t.
Chechens are Russians. Same for the Wagner group.