Foreign policy is not mentioned on the Wikipedia page for Libertarianism.
How does a Libertarian system decide which roles (like researching the intentions of foreign states, and defending against them) a government should play, and which (like presumably researching the weather, and defending against natural disasters) it shouldn't?
How does a Libertarian system decide which roles (like researching the intentions of foreign states, and defending against them) a government should play, and which (like presumably researching the weather, and defending against natural disasters) it shouldn't?