Control is War

My column this week is on control and war, it begins:
War is clearly destructive. Even war fought totally in self-defense is destructive; destructive to life, liberty, and property. Murray Rothbard wrote an excellent analysis of war titled "War, Peace, and the State". I highly recommend reading it. As a voluntaryist, I oppose war on philosophical, ethical, spiritual, and economic grounds. The question I'd like to examine here, however, is "when does war begin?" And I think the answer is "when you attempt to forcibly control someone else without their permission." If so, what are the implications of that?