Who were the main political leaders of the US and USSR?

During the Cold War, the main political leader of the United States was President John F. Kennedy, who served from 1961 until his assassination in 1963. In the USSR, Premier Nikita Khrushchev was the leading figure during this period, known for his role in events such as the Cuban Missile Crisis. Later, Leonid Brezhnev became the prominent Soviet leader in the late 1960s and 1970s, overseeing a period of détente and escalating tensions with the West. These leaders played critical roles in shaping the dynamics of US-Soviet relations during the Cold War.