John F. Kennedy led the nation for just shy of three years, but in that short time, a series of Cold War crises embroiled the JFK Administration into what nearly became an armed conflict with Castro's Cuba.  The disastrous Bay of Pigs invasion in 1961 destroyed relations between Kennedy and Castro, and the Cuban Missile Crisis in 1962 left Americans terrified of an impending nuclear war.  The heightened tensions between Castro and the Kennedy Administration led many to believe that Fidel might have played a role in JFK's assassination. Two federal investigations dismissed this idea, but a new book by former CIA analyst Brian Lattell claims that Castro knew of Lee Harvey Oswald's assassination plot before the shots were fired from the Texas Book Depository on November 22nd, 1963. Brian Latell  is the author of "Castro's Secrets: The CIA and Cuba's Intelligence Machine" and a former CIA National Intelligence Officer for Latin America.