Roads to Freedom by Bertrand Russell

The main objects which should be served by international relations may be taken to be two: First, the avoidance of wars, and, second, the prevention of the oppression of weak nations by strong ones. These two objects do not by any means necessarily lead in the same direction, since one of the easiest ways of securing the world's peace would be by a combination of the most powerful States for the exploitation and oppression of the remainder. This method, however, is not one which the lover of liberty can favor. We must keep account of both aims and not be content with either alone.

One of the commonplaces of both Socialism and Anarchism is that all modern wars are due to capitalism, and would cease if capitalism were abolished. This view, to my mind, is only a half-truth; the half that is true is important, but the half that is untrue is perhaps equally important when a fundamental reconstruction of society is being considered.