If all States are evil, some are more evil than others, some particular States have engaged in enormously more aggression, both internally against their subjects, and externally against the citizens of other States. … If we libertarians are to understand the real world, and to try to bring about the victory of liberty in that world, we must understand the actual history of concrete, existent States. History provides the indispensable data by which we can understand and deal with our world, and by which we can assess the relative guilt, the relative degrees of aggression committed by the various states.
Murray N. Rothbard
Libertarian Forum v. 2, p. 639
https://www.youtube.com/watch?v=Wwqph7MwUdQ In war, State power is pushed to its ultimate, and, under the slogans of “defense” and “emergency,” it can impose a tyranny upon the public such as might be openly resisted in time of peace. War thus provides many benefits...