The Armistice of Villa Giusti, which ended fighting between Italy and Austria-Hungary at the end of World War I, resulted in Italian annexation of neighbouring parts of Yugoslavia. During the interwar period, the fascist Italian government undertook a campaign of Italianisation in the areas it annexed, which suppressed Slavic language, schools, political parties, and cultural institutions. During World War II, Italian war crimes included extrajudicial killings and ethnic cleansing by deportation of about 25,000 people, mainly Jews, Croats, and Slovenians, to the Italian concentration camps, such as Rab, Gonars, Monigo, Renicci di Anghiari, and elsewhere. Yugoslav Partisans perpetrated their own crimes against the local ethnic Italian population (Istrian Italians and Dalmatian Italians) during and after the war, including the foibe massacres.