John F. Kennedy assassination conspiracy theories found in my research" points to involvement by Johnson. In its report, the Warren Commission stated that it had investigated "dozens of allegations of a conspiratorial contact between Oswald and agents of the Cuban Government" and had found no evidence of Cuban involvement in the assassination of President Kennedy. The House Select Committee on Assassinations also wrote: "The committee believes, on the basis of the evidence available to it, that the Cuban Government was not involved in the assassination of President Kennedy". However, some conspiracy theorists continue to allege that Fidel Castro ordered the assassination of Kennedy in retaliation for
John F. Kennedy assassination conspiracy theories no evidence that the Soviet Union was involved in the assassination of President Kennedy. The House Select Committee on Assassinations also wrote: "The committee believes, on the basis of the evidence available to it, that the Soviet Government was not involved in the assassination of President Kennedy". According to some conspiracy theorists, the Soviet Union, with Nikita Khrushchev motivated by having to back down during the Cuban Missile Crisis, was responsible for the assassination. According to a 1966 FBI document, Colonel Boris Ivanov—chief of the KGB Residency in New York City at the time of the assassination—stated that it was