прикордонна огорожа
sit on the fence / be on the fence (in the Ukraine war)
border (security) forces /troops
border
border break (cart.)
border command
border control
border crossing arrangement
border crossing point (BCP) / station
border disputes
border management
border monitoring
border security
state border
trans-border cooperation
trans-border threat
US Border Patrol
violation of the state border
border and offshore submersible sentry
cetane number in border line
clandestine border crossing
border flight clearance
cross-border incursion
cross-border raid
border patrol drone
barbed wire fence
clear a fence
double apron fence
double concertina fence
double-apron fence
electric fence
fence wire
Lapland fence