It's the obvious:
Personality disorder skirts around it:
He's a psychopath...
1) He has an absence of any guilt or remorse.
2.) He exhibits a shallow emotional reaction or response that in healthy people would otherwise cause a deeper response.
3.) He exhibits a lack of empathy.
I make just these few observations as thay became obvious to us via the media releases.
I'm relatively sure the media avails us to much more to comment on and his relevant diagnosis of psychopathy.