National Assembly of Yugoslavia Stjepan Radić Ante Pavelić Ustaše Croatian Yugoslavia Italy
Croatian separatism soared after the assassination of Croatian political leaders in the National Assembly of Yugoslavia in 1928 including the death of Stjepan Radić, and Italy endorsed Croatian separatist Ante Pavelić and his fascist Ustaše movement that was based and trained in Italy with the Fascist regime's support prior to intervention against Yugoslavia.