An interesting property of art is that is doesn't enforce anything. You have to be willing to accept its message. War is pretty much the exact opposite end of the same line of distributing power.
I've long since thought that the relation of peace to war is that of the absence and presence of violence. Whereas the relation of art to war is also one of opposition but along a different axis, that of creativity and destruction.
Looked at this way war has at least two 'opposites'. I put opposites in quotes because I think there are far fewer actual binary dichotomies than people make out.
While I'm on the topic. Same for love. They say the opposite of love is hate. But whereas love draws people together fear keeps keeps them apart so you could also say that fear is the opposite of love. Looked at in this way love has at least two 'opposites'.
I wonder how many other traditional binaries could be broken?