So then what? Everyone should just shrug if a neighbouring country say "this is mine now, lol"? There are a lot of people on the world for whom that didn't real

So then what? Everyone should just shrug if a neighbouring country say "this is mine now, lol"? There are a lot of people on the world for whom that didn't really work out so well. In principle few people would of course disagree with this, but this is a naïve idealistic teenager take. The reality is that without an army that's willing to actually fight you will be taken advantage of sooner or later. Maybe at some point in the future when more of the world shared humanistic ideals that will be different, but that's not the situation today.