Spies by role

thumb|right|240px|A representative from the United States Department of State |U.S. State Department congratulates and offers a partial payment to a fully disguised informant whose information led to the neutralization of a terrorist in the Philippines thumb|Two-page totally confidential, direct and immediate letter from the Iranian Minister of Finance to the Minister of Foreign Affairs (Hossein Fatemi) about creating a foreign information network for controlling smuggling, 15 December 1952

type of special intelligence service

person who commits or who acts to entice another person to commit an illegal or rash act

type of spy

operation of an intelligence agency or the military that is so planned and executed as to conceal the identity of or permit plausible denial by the sponsor

3rd-class head of diplomatic mission

A stay-behind operation is one where a country places secret operatives or organizations in its own territory, for use in case of a later enemy occupation. The stay-behind operatives would then form the basis of a resistance movement, and act as spies from behind enemy lines. Small-scale operations may cover discrete areas, but larger stay-behind operations envisage reacting to the conquest of whole countries.

thumb|A Soviet Lavochkin La-7 fighter aircraft that crash-landed in [[Sweden after being flown there by a defecting pilot, May 1949]]

investigative practice involving the use of romantic or sexual relationships for interpersonal, political, or monetary purpose

person employed by an organization to collect, compile and/or analyze information

masking one's identity to allow infiltration of an organization

spy who is placed in a target country or organization to act as a potential asset if activated and not to undertake an immediate mission

WWII Soviet nuclear-research spies in the West

type of secret agent

long-term spy in a foreign country

title for a detective or investigator for a state, county, municipal, federal or tribal government

ostensible identity and/or role or position in an infiltrated organization assumed by a covert agent

informant for spies

leader of a spy ring