Directorio Revolucionario Estudiantil
The Directorio Revolucionario Estudiantil (abbreviation: DRE; English: Student Revolutionary Directorate) was a Cuban student activist group launched in opposition to Fidel Castro in 1960, based at the United States, where it soon developed links with the Central Intelligence Agency. In August 1962 it carried out an attack on a beachfront Havana hotel.
Source: Wikipedia — Directorio Revolucionario Estudiantil (CC BY-SA 4.0)