主題
Espionage
History
6
Cold War
3
Intelligence service
3
Spies
3
Electronic surveillance
2
Access control
1
British
1
Data mining in law enforcement
1
Defense information, Classified
1
Foreign relations
1
Geopolitics
1
Government information
1
Government policy
1
International relations
1
Journalists
1
Leaks (Disclosure of information)
1
National security
1
Official secrets
1
Politics and government
1
Prevention
1
Social conditions
1
Terrorism
1