PAROLE - password used to confirm identity between agents

PATTERN - repeat actions / behaviour of a spy that may lead to his detection

PLAUSIBLE DENIABILITY

POCKET LITTER - Pocket litter is a term for material, including notes scribbled on scraps of paper, that accumulates in an individual's pockets. It can include identity cards, transportation tickets, personal photographs, computer files, mobile phones, and similar material.
Counter-terrorism analysts report that the analysis of pocket litter can be an important tool for confirming or refuting suspects' accounts of themselves.

POLYGRAPH - A polygraph (commonly and inaccurately referred to as a "lie detector") is a device which measures and records several physiological variables such as blood pressure, heart rate, respiration and skin conductivity while a series of questions are being asked, in an attempt to detect lies. The above measurements are posited to be indicators of anxiety that accompanies the telling of lies. Thus, measured anxiety is equated with telling untruths. However, if the subject exhibits anxiety for other reasons, a measured response can result in unreliable conclusions. A polygraph test is also known as a psychophysiological detection of deception (PDD) examination. The original polygraph was invented by John A. Larson. Today, polygraph examiners use two types of instrumentation, analog and computerized. In the United States, most examiners now use computerized instrumentation.

POTUS - President of the United States.

PSYOPS - Psychological operations - influencing behavior of the masses, through mainstream media such as radio, press and TV. Sometimes called brainwashing.

QUANTUM CRYPTOGRAPHY - quantum mechanics-based way of securing communication (still in theory).

R2I - resistance to interrogation is a name for a set of techniques taught to UK, USA and other NATO soldiers ostensibly to help them, after capture by the enemy, to resist interrogation techniques such as humiliation and torture.

RCMP - Royal Canadian Mounted Police

RING - a network of spies

SAFEHOUSE - a place where a spy can hide from an enemy / security services of country where he operates

SECRET Services

SECURE COMMUNICATIONS

SELECTIVE ASSASSINATION - Selective Assassination is a policy of selecting targets, using arms, training personnel and cover-up strategies designed to justify assassination as the means to meet a political agenda.

SEMTEX - Czech-made plastic explosive

SERE Survival, Evasion, Resistance and Escape

SHABAK - SHIN BET - Israel's internal security

SHOE - false passport

SIGINT - signals intelligence - intercepted signals

SIT REP - situation report

SLEEPER - deep cover agent with a mission to penetrate the highest reaches of the target nation - long term project

SLEEPER Cell

SLO - Security Liaison Officer - officer of CSIS

SOA - School of the Americas (Escuela de las Américas) - Terrorist training center located at Fort Benning, Georgia. Responsible for training human rights violators in the Spanish Latin and South Americas. Public outrcries forced the US government to rename SOA to: the Western Hemisphere Institute for Security Cooperation (WHISC or WHINSEC).

SODIUM PENTOTHAL / Sodium thiopental / thiopental / thiopentone sodium / trapanal - "truth drug"

SOFT TARGET - someone who is not properly trained to evade surveillance

SPETSNAZ - Recon / Sabotage Special Forces of the Main Intelligence Department od the Russian Army

SPY motivations

SPYWRITER - Jack King

SPOOK - spy, intelligence officer

STATION - a place where spies operate from, for example an embassy where an intelligence officer is posted

STEGANOGRAPHY

STOCKHOLM SYNDROME is a psychological response sometimes seen in an abducted hostage, in which the hostage exhibits loyalty to the hostage-taker, in spite of the danger (or at least risk) in which the hostage has been placed.

SURVEILLANCE

SVR - Foreign Intelligence Service, Russia

SWIM - means: to travel