secret agent intelligence

агентурна розвідка

Secret Intelligence Service (SIS) / Military Intelligence, Section 6 (MI6)

foreign secret agent

be drawn from secret intelligence

agent / agent network / agents

CW agent (chemical warfare agent)

obscurant agent (vision-restricting agent)

damage agent / damaging agent

secret (security classification)

secret internet protocol router network (SIPRNET)

top secret (security classification)

be marked top secret

give away the secret by careless talk

clearance for top secret work

secret clearance

secret defense service

secret language

secret qualification clearance

secret security clearance

agent inside the intelligence service

agent with intelligence service

counter-intelligence agent

tactical intelligence / combat intelligence

undeclared member of the intelligence or counter-intelligence agencies