... That's a good question. I think these places have mayors, but there's nothing like governors or presidents or armies, as far as I know. You asked about the defenses, but I think there's just natural defenses like the caves and forests, and territorial Pokemon. There aren't any wars, but there is a criminal organization called Team Rocket. They steal Pokemon, so you'll need to watch out for them if you can. A lot of their members are secret.