- geography (it's difficult to use tanks/aviation in mountains)
- lack of useful at-war resources
- a high percentage of the population possesses firearms

nikicat

What was the mechanism that Switzerland was able to navigate neutrality during WW2 etc and avoid invasion and confiscation of its gold. Just Geography? Or was there some stronger political forces at play?  

chungkingexpress

So far this is one of the more compelling replies.

HardRich

Wars between countries with Fiat vs Bitcoin?

Bitcoin countries will tend to be neutral like Switzerland and avoid conflict. Mutually beneficial trade will be the primary interaction with foreign powers and whatever few belligerent states try to cause trouble will feel pressured to behave by the international community.