show trial in June 1917. Golubić was released and left Corfu, relocating to France via Italy, and settling there for the remainder of the war. Interwar period Upon returning to Serbia, which had in the meantime united with the other South Slavic lands in the western Balkans to form the Kingdom of Serbs, Croats and Slovenes, Golubić was immediately arrested and imprisoned inside the Rakovica Monastery. Shortly thereafter, he was exiled to Stolac and placed under constant police surveillance. After being accused of making death threats against Alexander, Golubić left the country in late 1920 and settled in Vienna. He subsequently survived an assassination attempt, and after the Austrian authorities revoked his temporary residence visa, was forced to move to Prague. The following year, he returned to Austria illegally and once again settled in Vienna. Shortly upon his return, he joined the Communist Party of Yugoslavia (; KPJ). Between 1923 and 1927, he wrote for the Vienna-based publication La Fédération balkanique under the pseudonym Nikola Nenadović. The publication was directly subordinated to Soviet intelligence. During this time, he collaborated with the high-ranking Soviet agents Labud Kusovac and Pavle Bastajić. In one of his articles for La Fédération balkanique, Golubić claimed that Dimitrijević had organized and financed the assassination of Archduke Franz Ferdinand with the knowledge of the senior Russian diplomat Nicholas Hartwig, the Russian military attaché Viktor Alekseevich Artamonov, Serbian Prime Minister Nikola Pašić, and crown prince Alexander. Describing the claims as unsubstantiated, Dedijer concludes that Golubić made these allegations "in a spirit of revenge" against Alexander, who had forced him into exile. In 1927, Golubić moved to Moscow, where he began working for the Joint State Political Directorate (OGPU), which was later renamed the People's Commissariat for Internal Affairs (NKVD). Alongside fellow Yugoslavs such as Vlajko Begović and Mirko Marković, Golubić played a key role in the Soviet Union's covert efforts to further the cause of the "world revolution". In this capacity, he took part in countless assassinations of the Soviet Union's political opponents and adversaries abroad. His assignments took him to France, Spain, China, Japan, and North America. Golubić eventually attained the rank of colonel. The covert nature of Golubić's activities led to him having an almost legendary reputation among the interwar Yugoslav communists. His exploits became the subject of numerous tales and yarns, the authenticity of which is difficult if not impossible to ascertain. Golubić was one