Hm... not exactly sure how your quote stating that Costa Rica maintains a military-free status falsifies the grandparent's comment stating exactly the same.
It doesn't directly falsify the fact that Costa Rica lacks a military, but shows that their solution does not scale in a useful manner.
Edit: It directly contradicts the usage of the claim that small countries do not need a military. Essentially borrowing deterrence from another doesn't result in the world being military free.
it doesn't directly rebut the post, but the poster you are responding to is emphasizing that costa rica is only able to maintain their military-free status by allying with one of the most powerful militaries in the world.
it's probably a good thing that not every country in the world needs to maintain a full-scale military, but this only works if you have a powerful ally whom you can trust to defend you. the fact that costa rica is able to exist without a military doesn't imply that the US could also disband their military.
