Then I think I better comparisons would be germany and France. And the great 5 are usually much stronger than any other nation (usually). So Kai is basically saying he doesn’t even want to be compared to such a village.
Whether Germany or France, outsiders would still consider them European. While they don't fall under the say nationality it's possible to classify them under one name. But because the Nation is
'the land of water' and both villages are just parts of the land of water, they of the same
'nationality'. Kai's just the weird one refusing to acknowledge anyone except the people in his 'town'. That's why I'd say its much more like States of the USA. Where even within the whole country, each state has their own system of government and the like. They're all still American though. Like how Kai and Sagiso are both still citizens of the land of water.
Wouldn’t say that. Ninjas are much harder to capture, as the kunoichi of the nadeshiko village are more than likely going to abduct people from the land they are connected to. The village hidden in the mist is well...hidden lol. Regardless also have a very powerful core of ninja. Any powerful or loyal ninja would rather die or kill the enemy ninja than do so. I can guarantee no Yuki clan member is there, as they are too strong generally to bring in
Ninja are hard to capture, but since Nadeshiko still exists they've captured more than enough. Since the village is closest to the land of water, the closest village is Kiri... and in all honesty, Nadeshiko is much more hidden than any of the main ninja villages anyway.
As for the Yuki clan... hmmm, I wouldn't say that. Although they're a cut above average ninja, Nadeshiko nin aren't any pushovers. We don't have much to work with but they've definitely got people at least as strong as the legendary sannin, since one of them was able to track and battle Jiraiya for almost 24 hours. Since we can assume not every ninja of the Yuki clan or Nadeshiko are legendary sannin level, it's fairly likely that one of them could've got captured.
Besides, that wasn't really what I was getting at. What I was saying is that even if only 1 Nadeshiko ninja migrated to kiri, her children would probably marry in kiri, and their children and grandchildren would do the same. Eventually, her bloodline would slowly spread across the members of the mist. All you'd really need is for one of those children to have married into the Yuki clan. It's not highly probable, but it's not highly improbable either, so I gave it about 50% chance.
Edit:
Tl;Dr: Kai isn't nationalist...just villagist.