What does the Berlin Wall tell us about the nature of the Cold War in the 1960s ?

Explanation:

First constructed in 1961, the wall was the Cold War's most tangible symbol of communism and demarcation of the Iron Curtain. ... Professor Harrison: The wall symbolized the lack of freedom under communism. It symbolized the Cold War and divide between the communist Soviet bloc and the western democratic, capitalist bloc

not to sure sdi, strategic defense initiative

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