Special Unit to Audit Bulgarian Secret Services - Novinite.com - Sofia News Agency
The Bulgarian umbrella: The Soviet direction and operations of the Bulgarian Secret Service in Europe - Kostov, Vladimir: 9780710812292 - AbeBooks
SecuringIndustry.com - Bulgarian ID fakers use Stallone image on advertising
Bulgaria Arrests Spy Ring Supporting Russian Intel Network - ClearanceJobs
KGB: History, Structure and Operations - Grey Dynamics
How Bulgaria became the EU's mafia state – POLITICO
How a Poisoning in Bulgaria Exposed Russian Assassins in Europe - The New York Times
Bulgaria's Security Agency DANS admits to Russian influence and propaganda in Bulgaria - News
Bulgarian Journalists Search the Files of the Former State Security Services: The Murder of Georgi Markov, The Assassination Attempt on the Pope, and The Communist Regime's Repression | UNREDACTED
U.S. To Deploy Armored Unit To Bulgaria To Boost NATO's Eastern Flank
Bulgaria breaks up 'Russian spy ring' – DW – 03/19/2021
Skeletons in the Closet – DW – 03/14/2008
Helpful Links » Bulgarian American Police Association
Bulgaria - InfoMigrants
Visit of Secret Service Agent Bill Straughn. President John F. Kennedy visits with White House Secret Service agent, Bill Straughn (center left), in the Oval Office of the White House, Washington, D.C.;
Sun, sea and scams: six arrests for forging money and documents in Bulgaria | Europol
WW2 German, Soviet, Allied militaria, uniforms, awards, weapons history. War relics forum
Bulgarian Journalists Search the Files of the Former State Security Services: The Murder of Georgi Markov, The Assassination Attempt on the Pope, and The Communist Regime's Repression | UNREDACTED
State Agency for National Security - Wikipedia
State Intelligence Agency (Bulgaria) - Wikipedia
Bulgarian President holds firm against appointing ambassadors who were communist secret service agents – The Sofia Globe
Amazon.com: The Bulgarian Umbrella: The Soviet Direction and Operations of the Bulgarian Secret Service in Europe (English and French Edition): 9780312023874: Kostov, Vladimir, Reynolds, Ben: Books
Bulgarian Interior Min Appears to Be 'Agent' of US Secret Service - Novinite.com - Sofia News Agency
