The Coordination of United Revolutionary Organizations (Coordinación de Organizaciones Revolutionarias Unidas, or CORU) was a United States supported militant group responsible for a number of terrorist activities directed at the Cuban government of Fidel Castro. It was founded by a group that included Orlando Bosch and Luis Posada Carriles, and was composed chiefly of Cuban exiles opposed to the Castro government. It was formed in 1976 as an umbrella group for a number of anti-Castro militant groups. Its activities including a number of bombings and assassinations, including the killing of human-rights activist Orlando Letelier in Washington, D.C., and the bombing of Cubana Flight 455 which killed 73 people.
The FBI described CORU as "an anti-Castro terrorist umbrella organization." According to declassified CIA documents, the Coordination of United Revolutionary Organizations (CORU) was set up at a meeting in the small town of Bonao in the Dominican Republic in June 1976. The meeting was attended by a number of Cuban exile militant groups. The FBI later said that at the meeting, "these groups agreed to jointly participate in the planning, financing, and carrying out of terrorist operations and attacks against Cuba." Bosch, according to the document, was committed to violent acts against other countries he believed supported Cuba, including Colombia, Mexico and Panama. The groups included the terrorist organizations Alpha 66 and Omega 7 Orlando Bosch, who became leader of CORU, later stated that "Our war strategy was created there—everything. All the top leaders of the paramilitaries in Miami were there."
Carriles and Bosch were both present at the meeting in Bonao, at which CORU was formed. A number of violent actions followed in the months after this meeting, for some of which CORU directly claimed responsibility. The group used the reputation they had gained from these attacks to generate support for a larger attack, including through a fundraising dinner held in Caracas, at which donors paid $1000 a plate. This larger plot turned out to be the bombing of Cubana Flight 455, which killed 73 people, and which remained the group's largest attack.