[jrflowers]

Isn’t every country by definition a “local monopoly on force”? Sweden and Norway have their own militaries and police forces and neither would take kindly to an invasion from the other. By your definition this makes them adversaries or enemies.

[kriops]

Exactly. I am Norwegian myself, and I don’t even know how many wars we have had with Sweden and Denmark.

If you are getting at the fact that it is sometimes beneficial for adversaries to collaborate (e.g., the prisoner dilemma) then I agree. And indeed, both Norway and Sweden would be completely lost if they declared war on the other tomorrow. But it doesn’t change the fundamental nature of the relationship.