Dr. Strangemonkey said:
I really don't think this is true. In most polities internal threats are far less predictable and consume more resources than external threats. The US, for example, pays an obscene amount on military spending for external threats, but it's just a drop in the bucket compared to the payouts made to molify internal tensions.
By my definition, on your example of US economy, internal tensions will be its external threat.
To avoid misunderstandings lets speak of "1st priority" threats.
Dr. Strangemonkey said:
As for the monster manual: calling something like a demon an external threat is too simple a categorization. The primary way in which demons are a threat to communities is as an inherent internal threat. Demons rarely come rolling over the hill. Rather they are unleashed upon you by selfish members of your own community or prior communities who failed to contain the threat.
And, again, I think the cosmology actually does what you think it does not do.
Yes, I believe this. I only said that the implied comsmology of feywild, shadowfell etch locked in struggle is too much complicated IMO -too much over the top. But it can be logical.
By your words:
"That creation is a constantly echoing act (Feywild and Shadowfell) defined by the tension between those forces which would constantly unmake/make it (the titans, primordials, elemental chaos, and Abyssals); those who would preserve and use it (the gods, the devils, and the Astral Dominions); and those who would warp it with their indifference and nihilism (the Far Realms and Aberrations).
Good and Evil are not of these forces, and none of these forces can be subtracted from the existence that is creation.
Good and Evil are, however, present across this great struggle and symphony. Those who have embraced either have the most agency. They hear the music best."
Its just too complicated IMHO.