Looks like there's a bug in the "Bonus in friendly lands" the Himeji Castle and Oligarchy provide. If I'm not mistaken, the bonus should work only in friendly territory. But it looks like it works even in enemy territory: The enemy (Russia) has both the Himeji Castle and Oligarchy. That gives them 58% bonus you can see in the picture. But as you can also see - the territory is mine.