The Italian Social Republic (Italian: Repubblica Sociale Italiana, IPA: [reˈpubblika soˈtʃaːle itaˈljaːna]; RSI, known prior to December 1943 as the National Republican State of Italy (Italian: Stato Nazionale Repubblicano d'Italia; SNRI), but more popularly known as the Republic of Salò (Italian: Repubblica di Salò, IPA: [reˈpubblika di saˈlɔ]), was a German puppet state with limited diplomatic recognition that was created during the latter part of World War II. It was a collaborationist regime in German-occupied Italy, established after the German invasion of Italy in September 1943 and disbanded with the surrender of Axis troops in Italy in May 1945. The German occupation triggered widespread national resistance against it and the Italian Social Republic during the liberation of Italy and the Italian civil war.
The Italian Social Republic was the second and last incarnation of the Italian Fascist state, led by the Italian dictator Benito Mussolini and his reformed Republican Fascist Party. The newly founded state declared Rome its capital but the de facto capital was Salò (hence the colloquial name of the state), a small town on Lake Garda, near Brescia, where Mussolini and the Ministry of Foreign Affairs were headquartered. The Italian Social Republic nominally exercised sovereignty in Northern and Central Italy, but was largely dependent on German troops to maintain control.