sentences:  From this moment on there would be no peace in Spain'
  
  He was an academic expert on Latin America who helped to uncover the CIA's clandestine preparations for the Bay of Pigs Invasion of Cuba in April 1961.During a research trip to Guatemala in 1960, he learned that a group of Cuban exiles were training at a secret camp (which everybody there seemed to know about) for their ill-fated attempt to overthrow Fidel Castro's regime.Hilton was the main source when the left-wing weekly "The Nation" broke the story in November 1960.