Ross, like too many diplomats, denies the existence of evil. Thus, there is no black or white, only shades of gray. There is always hope for the rulers in Iran and Syria, and, surely, Al Qaeda could change its ways if only it received the proper carrots and the US put away its stick.
No question that while 'diplomacy' IS the art of 'relativism' in a manner of speaking; there is no diplomatic virtue in embracing a 'moral relativism'. We are not dealing here with 'moral equivalencies' by agenda or goals.
In the case of the at-odds, Middle East and the WOT; there is a 'superior' position; and basic 'Absolutes' that suppport and define it.