The Directorate of Special Operations (DSO), commonly known as the Scorpions, was a specialised unit of the National Prosecuting Authority of South Africa formed by President Thabo Mbeki, tasked with investigating and prosecuting high-level and priority crimes including organised crime and corruption. An independent and multidisciplinary unit with a unique methodology which combined investigation, forensic intelligence, and prosecution, the Scorpions were known as an elite unit, and were involved in several extremely high-profile investigations, especially into the Arms Deal and into high-ranking African National Congress (ANC) politicians including Jackie Selebi, Jacob Zuma, and Tony Yengeni.

The Strategic Defence Package, popularly known as the Arms Deal, was a major defence procurement programme undertaken to re-equip the South African armed forces for the post-apartheid era. It is commonly associated with the large-scale corruption that is alleged to have taken place during and after the procurement process. Some critics have said that the Arms Deal was a defining moment or turning point for the African National Congress (ANC) government, less than five years into its tenure.