Argument appears unnecessary when you are a spectator. The same argument appears as if its everything for you when you are one of the arguers. Its not the situation but the role that we choose for ourselves makes the difference. However, when its your responsibility to calm down the arguers and if you accept that responsibility, you can not stay back like a spectator for longer time. The midway has to be found out by you being in a responsible position. Letting it happen the way it is or leaving it to the wisdom of the individuals might be intellectually accurate but not so productive all the time.