Man, the game gives you possibility of attacking someone of your own nation. But... big trade off if you do this you go pirate. That's what Eomer did, nothing forced you to follow him, he's now not part of France anymore. As we all did in our clan, we all went pirate. I understand that it can be hard to get ganked by a nationmate who wants to become pirate but there is no reason to cry about it, it can only be done once per player. After that he is pirate.
We were a 100% French clan before yesterday, we are now a 100% pirate clan. I can't tell where your allegations came from.