Earlier quoted context omitted.
Their risk analysis therefore probably concludes that the present LIKELIHOOD of an invasion AND a successful occupation is too low to worry about. That's the difference between the paranoid and the rational.
Then, what's the point of having any military equipment at all to worry about? Mind you, failing at this gamble would have devastating effects, as was evidenced by many occupied nations during the last major conflict in Europe.
Note that Costa Rica has no defence force at all.
> failing at this gamble
Yes, all adult decisions are based on uncertainty. Especially when resources are limited.