Which could cause a naturalized citizen to lose his or her citizenship

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.

Yugoslavia a: nato b: warsaw pact c: not a member of either alliance

What was the “u-2 incident” and how did it affect u. s./soviet relations in 1960?