The Aldo Moro murder. History, evidence and letters during his kidnapping - Analyses some recently acquired aspects of the case and, particularly, a recent book on the Moro’s letters from the prison. The most relevant tendency in the recent research on the Moro murder case is the enlargement of the perspective from a strictly "criminal" point of view toward a more complex historical interpretation; this includes the crisis of the Italian political system, the international scene and the whole biography of one of the most important leaders of post-war Italy. Keywords: Italy, History, Terrorism, ’70, Moro. Parole chiave: Italia, Storia, Terrorismo, ’70, Moro.