Pietro Sandro Nenni (; 9 February 1891 – 1 January 1980) was an Italian socialist politician, the national secretary of the Italian Socialist Party (PSI) and senator for life since 1970. He was a recipient of the Lenin Peace Prize in 1951. He was one of the founders of the Italian Republic and a central figure of the Italian political left from the 1920s to the 1960s. Early life and career He was born in Faenza, in Emilia-Romagna. After his peasant parents died, he was placed in an orphanage by an aristocratic family. Every Sunday, he recited his catechism before the countess and if he did well, he received a silver coin. "Generous but humiliating", he recalled. He affiliated with the Italian Republican Party. In 1908, he became editor of a republican paper in Forlì. The socialist paper in the town was edited at the time by Benito Mussolini, later the Fascist dictator of Italy. In 1909 he entered political life by joining the Italian Republican party. Nenni was arrested in 1911 for his participation in a socialist protest against Italy's imperialistic war in Libya alongside Mussolini and was imprisoned for seven months. First World War When the First World War broke out, he advocated the intervention of Italy in the war. In 1915, he volunteered for the Isonzo front. After he was wounded and sent home, he became an editor of the republican paper Mattine d'Italia. He defended Italy's participation in the war but tried not to alienate his socialist friends. In the last years of the war Nenni served at the front again. When the war was over, he founded, together with some disillusioned revolutionary ex-servicemen, a group called "Fascio", which was soon dissolved and replaced by a real Fascist body. While the socialist Mussolini became a fascist, the republican Nenni joined the Socialist Party in 1921 after its split with the wing that would form the Italian Communist Party (PCI). In 1923, after the Fascist March on Rome, he became the editor of PSI's official organ, Avanti!, and engaged in antifascist activism. In 1925 he was arrested for publishing a booklet on the fascist murder of Socialist leader Giacomo Matteotti. When the Avanti offices were set aflame and the paper prohibited in 1926, he took refuge in France, where he became secretary of the PSI. In exile Nenni had worked in Paris as a correspondent of the