This edited collection offers the first systematic account in English of Italy’s international position from Caporetto – a major turning-point in Italy’s participation in the First World War – to the end of the liberal regime in Italy in 1922. It shows that after the ‘Great War’, not only did Italy establish itself as a regional power but also achieved its post-unification ambition to be recognised, at least from a formal viewpoint, as a great power. This subject is addressed through multiple perspectives, covering Italy’s relations and mutual perceptions the Allies, the vanquished nations, and the ‘New Europe’. Fourteen contributions by leading historians reappraise Italy’s role in the construction of the post-war international order, drawing on extensive multi-archival and multi-national research, combining for the first time documents from American, Austrian, British, French, German, Italian, Russian and former Yugoslav archives.