For the Canonical List of Subtle Trope Distinctions: The Alliance is when two or more good- or neutral-aligned nations are allied. The Fictional United Nations can include both good and bad guys and has a formal governing body. The Federation is more centralized and is treated as a single state. Enemy Mine or Fire-Forged Friends situation, as was the case with the real-life United Nations. The concept is similar to The Alliance but can contain both good and evil members which provides a story set there with a source of conflict. Also alliances are often just a treaty or even an informal agreement making countries allies, whereas here there is a formal governing apparatus. However unlike The Federation the Fictional United Nations is not treated as a single state: individual members are still sovereign nations and may take action unilaterally if they feel the need. It also tends to have no military of its own, and operations ordered by its (usually) ruling council are executed by the armies of member states. May enforce a set of Fictional Geneva Conventions. Compare The Alliance and The Federation, as well as United Space of America which has a similar based-on-a-real-organization derivation. Also compare Multinational Team. See also United Nations Is a Superpower, where the Fictional United Nations has a lot more power than usual; the logical conclusion of this is One World Order.
- Batman: The Movie has the United World, serving as a No Celebrities Were Harmed version of the UN. The villains' main plot in the film involves kidnapping United World diplomats.
- Street Fighter has the Allied Nations, who deploy Colonel Guile and his men to Shadaloo in order to stop Bison. However, when Bison manages to best them, the AN then order Guile to retreat, much to his chagrin.
- The later books in the Old Man's War series partly revolve around the formation of an apparatus called the Conclave, intended to end the incessant territorial warfare between the thousands of races in the setting and distribute planets fairly. The Last Colony and Zoe's Tale deal with an attempt by humanity to sabotage it out of distrust.
- The Thomas Dixon book The Death Of A Nation has a "Parliament of Nations" created when the United States does not intervene in World War I, and that conflict ends in a negotiated stalemate. (The book was written before the US entry into the war.) The delegates are the head of state of each member country, and it's even more useless than the real-life League Of Nations.
- The 21st-century timeline in Star Trek: Federation features an organization in the background called the New United Nations that apparently replaced the original. We never find out much detail because the Optimum destroy the entire organization in the course of their bid for world domination.
- The Stargate SG-1 episode "The Torment of Tantalus" speaks of the Alliance of Four Great Races between the Asgard, Ancients, Furlings, and Nox. Ernest Littlefield's notes called it a "United Nations of the stars," but as the Asgard are the only remaining members to interact with the cast on a regular basis little is known beyond that.
- Babylon 5:
- The eponymous station served as a UN of sorts, with ambassadors from the League of Non-Aligned Worlds, the Narn Regime, the Centauri Republic, the Minbari, the Earth Alliance, and the Vorlon Empire each having a vote on various diplomatic resolutions. Often (as with the Real Life UN) this council proved ineffective in some crucial matters, ultimately (by admission of Ivanova in the Season 3 opening monologue) failing in its mission for peace as the Shadow War expanded.
- The Interstellar Alliance which formed toward the end of the series after the Earth Civil War was probably a more effective version, as each member was mutually protected from aggression by the treaty binding all members, which was enforced by the organization's military force, the Rangers.
- In the X-Universe series the five core races (Argon, Boron, Paranids, Split, and Teladi) form a group called the Commonwealth, or more formally the Community of Planets. The Teladi spearheaded its formation in the course of their efforts to enrich themselves off of trade, which the rivalry between the Argon/Boron and Paranid/Split alliances made difficult. The Commonwealth members still fight occasionally but they also band together against common threats such as the Khaak.
- The Citadel government in Mass Effect is headed by a council of appointed representatives of races that have demonstrated a commitment to the welfare of the entire alliance, both economically and militarily. Initially it's just the asari, turians, and salarians but after Mass Effect 1 humanity gains a seat (or in one ending, takes it over completely). The Council is somewhat of a benevolent dictatorship in that any decision they give must be abided by, and non-Council races can only make their case and hope the Council agrees with them.
- UPEO, short for "Universal Peace Enforcement Organization", in Ace Combat 3: Electrosphere is an international peacekeeping entity in a 2040s Strangereal where the national governments have long been supplanted by a world-spanning Corporatocracy. They are the last relic of the national state era and are therefore incredibly unfit to handle serious Corporate Warfare that forms the premise of the game's plot.
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