Without the actual power to put sanctions in countries or to have an Army, the Union has little influence in the world stage.
After the failure of the League of Nations, in the interwars period, and of the never implemented United Nations, besides the powerful division of the World in the Cold War between Europe and the United States and their respective allies, a new intergovernmental organization to regulate conflicts seemed an impossible project. However, it became essential when in 1952 the Reykjavík Conference revealed no useful in improving relations and to regulate nuclear arsenals.
In the beginning of 1953, various governments, including the USA and its allies, to join the new Union of Nations, which would settle new conflicts and keep a nuclear war from happening. Fearing the revival of the war in Turkey and a potential European fightback, they accepted. The Headquarters were planned for several months, until Spain, a neutral country, was chosen to do so. In May 21, 1953, the first Assembly of Nations was held, with the entire planet waiting results.
Turkish Civil War
The purpose of the Union of Nations was to keep the Turkish Civil War from becoming a nuclear disaster. Unfortunately, the Union wasn't able to do so. In April 21, 1954, the EFC launched an nuclear attack to Ankara, destroying the city. Turkey sued for peace after the attack and the United States and the Baltic League decided to not attack Europe. They knew that the EFC was able to counter-attack and they couldn't afford a nuclear war in Central Europe. However, the Union negotiates the Accord of Nicosia, ending the civil wars in Turkey, Egypt and Yemen.
The Union of Nations doesn't have a real power to keep the nations in order. It pledged Western Europe to not get involved in the Millennium Revolutions in Prussia. The leaders asked the governments of the countries to not use violence to fight the riots but to bring peace to the population. Many groups, especially in the EFC, have suggested the creation of a World Brigade, a Union army to make a stand in the resolutions taken by the Union, which come from the decisions of the member-countries, but the USA have opposed such a thing, claiming it "will destroy national integrity and trigger revolutions of the people against the Union"
The major organ of the Union is the Round Table, or Assembly, where every member-country is present and has the right to vote for the measures of the Union. In the Round Table, decisions like which side of a dispute the Union should follow, or to argue over international tensions. Which country has the right to have two representatives in it. It implements the one-country-one-vote initiative, although large countries like China, India and the US have complained about that.
Two spoke persons are elected every two years. It has been discussed the implementation of a General Secretary or some charge which would admnister the Union itself, but the tensions on which side to have that person from their own country has been delaying the issue.