Henry Kissinger is an American diplomat and political scientist, born on May 27, 1923. He served as the United States Secretary of State and National Security Advisor under Presidents Richard Nixon and Gerald Ford. Kissinger is known for his role in shaping U.S. foreign policy during the Cold War, particularly in relation to China and Vietnam. Kissinger played a key role in the policy of détente, which aimed to ease tensions between the U.S. and the Soviet Union. He was awarded the Nobel Peace Prize in 1973 for his efforts in negotiating a ceasefire during the Vietnam War. His strategies and decisions continue to influence international relations today.