(now when we are talking fantasies)
Let's say we found aliens living in the next solar system. That would be the beginning of the global human state. Even if they're not hostile, humanity as a whole world need to band together to figure out just what to do about them.
What you're looking for is pan-national governmental institutions. There are plenty of those.
Anyway, I predict when other people are discovered in another solar system, then each nation on Earth will attempt to have a relationship with them and it will be business as usual. Why would America or China agree on the best policy vs interstellar trade? They agree on so little else!
The fundamental axiom of geopolitics is that when confronted with a threat, humans consistently identify with the people they are closest to and most like. Family first, then tribe, village, region, country.
The size of the threat begets a corresponding organizational response. We don't cooperate all that well with China now, but you can better believe that if there were a compelling reason to, like, say, aliens in our back yard, we'd figure it out in a hurry.
Geneva plus Lac Léman region (Lausanne, Montreux) on the one end. Seperated by the "Röstigraben" from the German part of the Swiss Plateau, which itself is culturally divided by the Brünig-Napf-Reuss line[2].
https://en.wikipedia.org/wiki/Swiss_Plateau [1]
https://en.wikipedia.org/wiki/Br%C3%BCnig-Napf-Reuss_line [2]
Russia GDP in 2015: $1,235.858 billion
http://www.imf.org/external/pubs/ft/weo/2015/02/weodata/weor...