It is nothing new. They were executing POWs since day 1 of the war(and exact same torture and execution of POWs from Donbass). Just this time, they had openly posted videos of what they do.Allegedly, Russian POWs about to be executed by Ukrainian forces
And yes, all of this also lies on NATO's hands and west's. They have enabling them since 2014.
And it would change nothing. Western media would whitewash all crimes of Ukraine like it had done before. It is the exact same nazis that were executing Russian POWs in WW2. Exact;y same peoples, exactly same governments, nothing had changed. Europe had not changed in 70 years.
IMHO Russia just need to leave Geneva convention. No one follow it for Russian POWs either way.