iron_curtain has definitions from the field of politics
1
[ noun ] (politics) an impenetrable barrier to communication or information especially as imposed by rigid censorship and secrecy; used by Winston Churchill in 1946 to describe the demarcation between democratic and communist countries

Used in print

(Barry Goldwater, "A Foreign Policy for America"...)

We have had opportunities - clear invitations to plant our influence on the other side of the Iron_Curtain .

Related terms

ideological_barrier

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