Fourth International (post-reunification)
The Fourth International (FI), founded in 1938, is a Trotskyist international. In 1963, following a ten-year schism, the majorities of the two public factions of the Fourth International, the International Secretariat (ISFI) and the International Committee (ICFI), reunited, electing a United Secretariat of the Fourth International (USFI or USec).
This article is about the post-1963 organization. For the pre-1963 history of the movement, see Fourth International.
Fourth International
In 2003, the United Secretariat was replaced by an Executive Bureau and an International Committee, although some other Trotskyists still refer to the organisation as the USFI or USec.
The International today supports several activities which support the work of progressive activists and organizations around the world. Many of them trace their roots to the 1981-1983 period when the Pathfinder tendency broke with Trotskyism.