Oddino Morgari

Initially a Mazzinian radical, he became a member of the Italian Socialist Party (PSI) in 1891, and was elected leader of its local section in Turin the following year.

in 1908, proving himself to be an advocate of incipient Social democracy (a reformist and pacifist).

In 1911, Morgari inaugurated his activity as a "diplomat of Socialism" with a trip to the Far East, which would become his main preoccupation in the years of World War I; he took part in preparing the Zimmerwald Conference, celebrated the October Revolution and Bolshevist Russia, and signed the 1 April 1919 letter that declared the PSI adherence to the Comintern.

Nevertheless, he remained inside the PSI when its Bolshevik factions left to form the Italian Communist Party.

With Fascism and the March on Rome came a debate among socialists over the conflict and pacifism: in 1934, Morgari showed himself to be a partisan of an understanding with the Soviet Union, and called for defeatism to be applied as a revolutionary tactic in case Italy was to be led into war by Benito Mussolini.