John F. Kennedy assassination conspiracy theories stated that the Warren Commission had "failed to investigate adequately the possibility of a conspiracy to assassinate the President". The Ramsey Clark Panel and the Rockefeller Commission both supported the Warren Commission's conclusions. The last remaining documents under Section 5 of the President John F. Kennedy Assassination Records Collection Act of 1992 were released on October 26, 2017, while the remaining ones that are still classified will only be analyzed for redactions. According to author John C. McAdams, "[t]he greatest and grandest of all conspiracy theories is the Kennedy assassination conspiracy theory." Others have often referred to it as "the
John F. Kennedy assassination conspiracy theories Kennedy and others. Historian Michael L. Kurtz wrote that there is no evidence suggesting that Johnson ordered the assassination of Kennedy. According to Kurtz, Johnson believed Fidel Castro was responsible for the assassination and that Johnson covered up the truth because he feared the possibility that retaliatory measures against Cuba might escalate to nuclear war with the Soviet Union. In 2012, biographer Robert Caro published his fourth volume on Johnson's career, "The Passage of Power", which chronicles Johnson's communications and actions as Vice President, and describes the events leading up to the assassination. Caro wrote that "nothing that I have