Tapes support new book showing who really assassinated JFK. Newly released tapes of President Lyndon Johnson's telephone conversations corroborate the central premise of an explosive new book that promises to completely reshape the debate over who killed President John F. Kennedy. President Johnson believed what Richard Nixon always suspected... The surreptitious recordings, released from the Johnson library in Austin, Texas, Feb. 28, offer this bombshell missed by the press, Rosen writes: The Kennedy White House did not merely tolerate or encourage the murder of its ally, South Vietnamese President Ngo Dinh Diem, but organized and executed it. "Triangle" authors present...