abstract
ancient
auschwitz
ban
banned
barbed
barbed wire
border
border war
camp
close
closed
concentration camp
crime
crisis
danger
dangerous
delimited
delimiter
demarcationdemarcate
detail
discrimination
do not exceed
escape
extermination camp
first world war
ghetto
guerrilla
hazard
jail
line
lines
not open
object
off limit
off limits
old
prison
prisoner
refugee camp
rust
war
wire
wwi