Ring of Five/Related Articles
- See also changes related to Ring of Five, or pages that link to Ring of Five or to this page or whose text .
- University of Cambridge : University located in the City of Cambridge, Cambridgeshire, United Kingdom, is the second oldest university in the English-speaking world and the sixth oldest in Europe.
- Committee for State Security : Usually known as the KGB, one of Organs of State Security of the Soviet Union, with extensive responsibilities in intelligence (information gathering), border security, counterintelligence and suppression of dissent; split up in the Russian Federation with counterintelligence in the FSB and foreign intelligence in the SVR
- Clandestine human-source intelligence : clandestine operations by people who secretly collect intelligence, and their support by couriers, forgers, radio operators, and other operational personnel.
- Secret Intelligence Service : Britain's national-level civilian organization for intelligence and covert action
- Foreign and Commonwealth Office : The United Kingdom's foreign ministry, responsible for the country's diplomatic relations with other nations; informally, the 'Foreign Office'.
- Security Service : British domestic counterintelligence service, without police powers
- Anthony Blunt : Add brief definition or description
- Guy Burgess : Add brief definition or description
- John Cairncross : Add brief definition or description
- Donald Maclean : Add brief definition or description
- Kim Philby : Add brief definition or description
- James Jesus Angleton : Long-time OSS and CIA counterintelligence officer, who headed the CIA Counterintelligence Staff and constantly searched for conspiracies — which, in the world of intelligence, might or might not exist; he did not suspect Kim Philby
- William King Harvey : Add brief definition or description
- Anatoly Golitsyn : Soviet KGB officer who defected to the U.S. Central Intelligence Agency, triggering an intense internal debate, not completely settled today, if he were genuine or a KGB plant; he and Yuri Nosenko accused one another of being a double agent
- Peter White : Add brief definition or description
- Arthur Martin : Add brief definition or description
- VENONA : A long-running and highly secret collaboration between intelligence agencies of the United States and United Kingdom that involved the cryptanalysis of messages sent by several intelligence agencies of the Soviet Union.