John F. Kennedy

John F. Kennedy, the 35th President of the United States, had a notable impact on international relations during the Cold War era. His leadership was marked by the Cuban Missile Crisis, where he defused a potential nuclear conflict between the US and the Soviet Union. He also championed the idea of a world based on collective security through international alliances, such as NATO, to counter the spread of communism and maintain stability in the face of ideological tensions.