Behind any philosophical notions of statehood, a country is still just whatever territory your army can protect from other armies.
https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...
[0] https://www.nato.int/cps/en/natohq/topics_67655.htm#indirect
Lots of countries have tiny armies, and those that have large ones aren’t habitually invading their neighbours. There are a couple of potential exceptions to this, but it’s been holding up pretty well.
At this moment, several countries in the world can completely annihilate and depopulate the US. One of the things that are stopping them is... Lockheed Martin.