Why was the buffer zone so vital to the Soviets?

Write two paragraphs to explain how the cold war changed after the 1960s. first, identify the ways it changed during leonid brezhnev's leadership in the 1970s. then, explain how the cold war changed when ronald reagan was in office in the early 1980s. include supporting facts and details from the text in your response.

The people are the source for any and all governmental power in the united states

Which european nation had the most dominant navy during world war i