I have a scenario that I have, and I feel like I have it fairly well developed, but I can't shake the feeling that there's something more to it than I expect. So here's the scenario:
The Draconi are a race, effectively, of dragons in human form. Think lizard-men, but able to breathe fire. They exist in a medieval, D&D, World of Warcraft, Lord of the Rings kind of world. They are the kind of nobility who enact the typical "luxurious royal life contrasted to miserable peasant life" in their kingdom. Recently, the Draconi King and Queen have gone off on a continental voyage, leaving their son, the Prince, to rule.
However, in their absence, the Prince has taken an iron fist to the kingdom; never truly taught to learn restraint, he now takes a slightly bratty, "take what I want because I can" attitude, very similar to the real-world Roman emperor Caligula. He spread his rule outward into neighboring, unruled villages and towns, and violently conquested them.
He's become legendary and infamous. There's rumors he kidnaps women for his own pleasure, and they might not be untrue. However, a few factors prevent other kingdoms from going into war with him: Number one, the Draconi Kingdom is one of the most powerful kingdoms, ever. They have an enormous military, and on top of that, they have tamed dragons - there have already been discussions about the overwhelming power of dragons as a military device. Number two, the Kingdom is powerful economically as well; it is set on top of a very mineral-rich region, and has a high number of valuable exports. And three, it is currently surrounded by a large ring of uncolonized wilderness, which takes about a month to cross. The Prince has refrained from waging war on any other kingdoms for strategic reasons.
I've already considered assassinations, attempts to overthrow, rebellion, the considerations of war and the like. But I still can't shake the feeling that there's something that's slipping my thoughts. So my question is: Does the political status of this kingdom seem realistic? Are there factors I've failed to consider?