The more constrained the power of governments, the more it is diffused, checked and balanced, the less it will aggress on others and commit democide.… - Rudolph Rummel

Aside from anarcho-libertarianism, there are two contending ideas of libertarianism. In its broad sense, libertarianism is equated with civil liberties and political rights—what we usually mean by democracy. Sweden, Japan, and the United States would thus be almost equally libertarian. In its narrow sense, libertarianism is equivalent to classical liberal democracy, adding to democracy the requirement of a free market. India would then be less libertarian than Japan; Israel less libertarian than West Germany. Theoretically, liberal democracies should have significantly less violence than socialist democracies, but both should have significantly less than nondemocracies.

The evidence on this question is persuasive: the best way of eliminating war between nations, of minimizing domestic political violence, and of virtually making genocide and mass murder a horror of the past, is by fostering political freedom. Politically free nations do not make war on each other, have minimum domestic political violence, and virtually no genocide and mass murder. I call this the miracle that is freedom.

[There is an] unbridgeable chasm in the world. On one side are such criminal gangs, sanctified by the term government, and the United Nations they dominate, enforcing by their guns mass slavery, mass death, mass violence, mass impoverishment, and mass famine. On the other side are democratic countries where people are free, secure, and need not fear mass impoverishment, murder at the hands of government agents, and killing famines.