конспіративна переправа через державний кордон
border crossing arrangement
border crossing point (BCP) / station
level-crossing = (амер.) grade crossing
clandestine
clandestine operation; covert operation
clandestine operation
clandestine organization
experience with clandestine work
keeper of a clandestine address
give clandestine assistance
clandestine agencies
clandestine agent
clandestine assembly area
clandestine force
clandestine operations
clandestine passive resistance
clandestine patrol base
clandestine reconnaissance
clandestine warfare
Defense Clandestine Service (DCS)
clandestine premises
keeper of clandestine premises
border (security) forces /troops
border
border break (cart.)
border command
border control
border disputes
border management
border monitoring
border security
state border