таємна діяльність
clandestine operation; covert operation
covert
covert action
covert amphibious entry
covert attack
covert delivery
covert forces
covert intelligence
covert operation
covert propaganda
covert warfare
covert way
carry out covert action
covert activity
covert influence operation
covert intelligence officer identities
covert intelligence work
covert ops
information from covert sources
civilian activities
dangerous military activities
diplomatic activities
enabling activities
financial and economic activities
illegal activities
military and nonmilitary activities
morale, welfare and recreation activities
operational activities
outreach activities
peace support psychological activities
peacekeeping activities
peace-support psychological activities