The UOP replaced the communist-era Sluzba Bezpieczenstwa (SB), whose responsibilities had additionally included the suppression of opposition to the government prior to 1989.
In June 2002, the agency was split into two separate entities - Agencja Bezpieczenstwa Wewnetrznego (Internal Security Agency), which deals with internal security of the country (an FBI-like role), and Agencja Wywiadu (Intelligence Agency), which deals with foreign intelligence.
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