The trouble with sectarians, whether they be libertarians, Marxists, or world-governmentalists, is that they tend to rest content with the root cause of any problem and never bother themselves with the more detailed or proximate causes. [...] Libertarians must come to realize that parroting ultimate principles is not enough for coping with the real world. Just because all sides share in the ultimate state-guilt does not mean that all sides are equally guilty. On the contrary, in virtually every war, one side is far more guilty than the other, and on one side must be pinned the basic responsibility for aggression, for a drive for conquest, etc.

Murray Rothbard