Unfortunately, in most quarters of the world moral equivalancy is the operative notion. Most civilized countries today, even in the West, are more Socialist than not. Socialism is a left wing notion. Using the present day definition of Liberal, one is conftonted with thought processes that are emotion driven rather that reasoned. Socialists tend to be emotion driven.
Now, everyone has emotional responses; it's part of being human. But when emotions drive decision making, then you get political correctness, values neutral philosophy, success born guilt and moral equivilance. Everybody is the same, thus if we just sit down and talk through this thing, we can settle it. The modern liberal has no core belief in the dark side. Most of them don't believe in evil, only bad behavior because of the negative influence of others. No one is responsible for his actions as he is only reflecting his experiences with the "failure of society".
These notions come about because Man has difficulty in grasping what history teaches about human behavior. We can blame the educational system, but don't forget who let it get that way. The modern liberal believes that he has risen above and has moved beyond his history. That may well be true for some. The problem is most of the rest of humanity has not progressed and still mirrors human behavior of the past. A good deal of the world is still caught up in Tribal Feudalism with a little despotic religion thrown in. Wahabbist Islam is a very good example. It's also not lost on most that when you see so called christian cults, they tend to be feudal tribal set ups as well. Jim Jones is a good example.
Wars are not fought to be won today because the aforementioned deluded ones in the civilized world are either in charge or are in thrall to those that think the way I've just described. Apparently about 50% of those that actually participate, even in very small ways by uninformed voting, feel that way in America. There are not many places left in the civilized world that have a world view that is not sullied by the delusions of the Left.