International Committee of the Fourth International
The International Committee of the Fourth International (ICFI) is a public faction of the Fourth International founded in 1953. Today, two Trotskyist internationals claim to be the continuations of the ICFI: The first includes the Orthodox Trotskyist Socialist Equality Party (SEP) which was founded in 1986.
Source: Wikipedia — International Committee of the Fourth International (CC BY-SA 4.0)