The Informbiro period was an era of Yugoslavia's history following the Tito–Stalin split in mid-1948 that lasted until the country's partial rapprochement with the Soviet Union in 1955 with the signing of the Belgrade declaration. After World War II in Yugoslavia, Yugoslavia's new leadership under Josip Broz Tito pursued a foreign policy that did not align with the Eastern Bloc. Eventually, this led to public conflict, but the Yugoslav leadership decided not to acquiesce to Soviet demands, despite significant external and internal pressures. The period saw the persecution of the political opposition in Yugoslavia, resulting in thousands being imprisoned, exiled, or sent to forced labour. 100 Yugoslav citizens were seriously wounded or killed between 1948 and 1953 while some sources claim 400 victims during the existence of Goli otok prison camp. The purges included a significant number of members of Yugoslavia's security apparatus and its military.

The Socialist Federal Republic of Yugoslavia (SFRY), commonly referred to as SFR Yugoslavia or Socialist Yugoslavia or simply as Yugoslavia, was a country in Central and Southeast Europe. It emerged in 1945, following World War II, and lasted until 1992, breaking up as a consequence of the Yugoslav Wars. Spanning an area of 255,804 square kilometres (98,766 sq mi) in the Balkans, Yugoslavia was bordered by the Adriatic Sea and Italy to the west, Austria and Hungary to the north, Bulgaria and Romania to the east, and Albania and Greece to the south. It was a one-party socialist state and federation governed by the League of Communists of Yugoslavia, and had six constituent republics: Bosnia and Herzegovina, Croatia, Macedonia, Montenegro, Serbia, and Slovenia. Within Serbia was the Yugoslav capital city of Belgrade as well as two autonomous Yugoslav provinces: Kosovo and Vojvodina.