noun
Iron Curtain
Refers to the political, military, and ideological barrier that divided Europe during the Cold War. Often used metaphorically for any strict division or barrier.
冷戦時代、ヨーロッパは鉄のカーテンで東西に分断されていた。
During the Cold War, Europe was divided into East and West by the Iron Curtain.
その国は情報を厳しく管理し、鉄のカーテンを築いている。
That country strictly controls information, building an iron curtain.