Check out Kingdom! It's a less traditional game, but it strips away just about everything except for the power, politics, and intrigue, and does it rather well, in my mind. It can handle scopes as broad as a galaxy spanning empire or as narrow as an after school fan club.
Do note that it focuses primarily on internal politics, in that all the players are expected to be members of the same organisation and want it to succeed. But they should have very different ideas about how to accomplish that or what success looks like, which drives the ebbs and flows of power