(іст.) неприступна перешкода (напр. моря, що оточують Велику Британію)
sit on the fence / be on the fence (in the Ukraine war)
impregnable line
barbed wire fence
clear a fence
double apron fence
double concertina fence
double-apron fence
electric fence
fence wire
Lapland fence
single concertina fence
single strand fence
sit on the fence
surveillance fence
trestle apron fence
triple concertina fence
wing fence
knock-down fence
blast fence
break-down fence
jagged picket fence
wire fence
radar picket fence
apron fence
straddle the fence
radar fence
fence posts
fence
geo-fence