Unit for Special Operations (Jedinica za specijalne operacije, JSO) or Special Operations Unit, was an elite special forces police unit of the FR Yugoslav State Security Service (RDB). The JSO was created in 1996 by merging paramilitary units under the command of Željko Ražnatović "Arkan" and Franko Simatović and incorporating them into the security system of the FR Yugoslavia under the auspice of Jovica Stanišić, head of the Serbian State Security (RDB). From 1996 to November 2001, it was formally under the competence of the RDB. The unit was finally disbanded in March 2003, after the Prime Minister of Serbia Zoran Đinđić was assassinated as a result of a conspiracy in which some members of the unit were involved.