He's probably spying for Putin.

And/or give them cause to not turn over the POW's since they are already 'dead'. Hopefully more details will emerge that paint a better picture. No matter the case though, if the POW's are still alive, then this certainly seals their fate anyway as Russia isn't going to turn around and hand them over after all this.

Dame la bala, tengo nada sin mi familia. Te veré en hell pájaro.