varies by country and political system. Such operations can include surveillance, infiltration, and disruption of dissident groups, attempts to publicly discredit dissident figures, and even assassination or extrajudicial detention and execution. Security agencies are constrained in some countries by a mesh of judicial and legislative accountability, whereas in others they may answer only to a single leader or executive committee. Security agencies Armenia: National Security Service Australia: Australian Security Intelligence Organisation Bahrain: National Security Agency Bangladesh: National Security Intelligence (NSI) Belarus: State Security Agency of the Republic of Belarus (KDB or KGB) Bosnia and Herzegovina: Intelligence-Security Agency of Bosnia and Herzegovina Brazil Federal Police Brunei: Internal Security Department (Brunei) Canada: Canadian Security Intelligence Service, successor of RCMP Security Service China: Ministry of State Security (China) Croatia: Military Security and Intelligence Agency (Croatian: Vojna sigurnosno-obavještajna agencija or VSOA or VSA) and Security and Intelligence Agency (Croatian: Sigurnosno-obavještajna agencija ili SOA) East Germany (former): Stasi Estonia: Estonian Internal Security Service (KAPO) European Union: European Union Agency for Network and Information Security (ENISA, originally European Network and Information Security Agency) Finland: Finnish Security Intelligence Service (SUPO) France: functions divided between Police nationale, Gendarmerie nationale, and Direction centrale du renseignement intérieur Germany: Federal Office for the Protection of the Constitution (Germany), Bundeskriminalamt India: Intelligence Bureau (India) National Investigation Agency Indonesia: Indonesian State Intelligence Agency Ireland: Directorate of Military Intelligence (Ireland) Special Detective Unit, formerly the Special Branch and before that the Criminal Investigation Department (CID) Israel: Shin Bet (Israel Security Agency (ISA)) and others: see Israeli Intelligence Community Japan: Public Security Intelligence Agency (PSIA) Malaysia: Royal Malaysian Police Special Branch Netherlands: General Intelligence and Security Service New Zealand: New Zealand Security Intelligence Service Nigeria: State Security Service (SSS) Norway: Norwegian Police Security Service Oman: Internal Security Service Pakistan: Inter-Services Intelligence - ISI Intelligence Bureau (Pakistan) Federal Investigation Agency Poland: Agencja Bezpieczeństwa Wewnętrznego Portugal: Sistema de Informações da República Portuguesa (SIRP) former: PIDE, or Polícia Internacional e de Defesa do Estado Russia: Federal Security Service of the Russian Federation (FSB), successor of Federal Counterintelligence Service (FSK), successor of KGB Main Directorate of Special Programs of the President of the Russian Federation Main Intelligence Directorate (Russia) Serbia: Military Security Agency (BIA) (Serbian: Безбедносно-информативна агенција, БИА / Bezbednosno-informativna agencija, BIA) Singapore: Internal Security Department (Singapore) Slovenia: Slovenian Intelligence and Security Agency Somalia: National Intelligence and Security Agency (NISA) (Somali: Hay'ada Sirdoonka iyo Nabadsugida) Soviet Union (former): Cheka