The State Security Service (, ; ; ), also known by its original name as the State Security Administration, was the secret police organization of Communist Yugoslavia. It was at all times best known by the acronym UDBA, which is derived from the organization's original name in the Serbo-Croatian language: "Uprava državne bezbednosti" ("State Security Administration"). The acronyms SDB (Serbian) or SDS (Croatian) were used officially after the organization was renamed into "State Security Service". In its latter decades it was composed of eight semi-independent secret police organizations—one for each of the six Yugoslav federal republics and two for the autonomous provinces—coordinated by the central federal headquarters in the capital of Belgrade. Although it operated with more restraint than secret police agencies in the communist states of Eastern Europe, the UDBA was a feared tool of control. It is alleged that the UDBA was responsible for the "eliminations" of dozens of enemies of the state within Yugoslavia and internationally (estimates about 200 assassinations and kidnappings). Eliminations vary from those of World War II Ustaše Croat leaders Ante Pavelić and Vjekoslav Luburić (in Argentina and Spain), to Croatian emigrant writer Bruno Bušić and Serbian emigrant writer Dragiša Kašiković, although war criminals have to be distinguished from those assassinated only for dissent or political reasons. With the breakup of Yugoslavia, the breakaway republics went on to form their own secret police agencies, while the State Security Service of the FR Yugoslavia kept its UDBA-era name. Functions UDBA formed a major part of the Yugoslav intelligence services from 1946 to 1991, and was primarily responsible for internal state security. After 1946 the UDBA underwent numerous security and intelligence changes due to topical issues at that time, including: fighting gangs; protection of the economy; Cominform/Informbiro; and bureaucratic aspirations. In 1945 and 1946, for instance, the UDBA was organized into districts. In 1950, when the administrative-territorial units were abolished as authorities, the UDBA was reorganized again. During this period the intelligence and security activities concentrated less on intelligence and more on internal security. There was an emphasis on collectivism, brotherhood, social harmony, loyalty, and tolerance towards those with different views. Deviation from this set of values became an immediate issue for security services. Later, the use of force was mitigated and when the process of "decentralization of people's power" began, intelligence and security services underwent further reorganization in order to decentralise power and increase effectiveness.