For questions about politics at a larger-than-nation-state scale. These may include questions about relations between superpowers, entities similar to the United Nations, the functioning of a single world-wide government, or other political operation spanning the world. See also [politics].
For questions about politics at a larger-than-nation-state scale.
Politics, as defined in the politics tag, is the lawful governance of people by means of an organized government. This geopolitics tag is specifically about politics at a larger-than-nation-state scale affecting the entire world. This generally means multiple political entities interacting with each other, often above the level at which common individuals can affect much.
Note that "world" in this case covers whatever the world is in the context of the question. It could be a generational starship or an interstellar empire, as long as there are no political entities in contact from the outside.