Henry Kissinger played a key role in the Vietnam War He was President Nixon's secretary of state and he was a negotiator who refused to accept a Nobel Peace Prize
He was known to be a proponent of Realpolitik. He played a dominant role in United States foreign policy between 1969 and 1977. In that period, he extended the policy of détente.
He was jointly awarded the 1973 Nobel Peace Prize with Lê Đức Thọ for helping to establish a ceasefire and U.S. withdrawal from Vietnam.
Lean more from
https://brainly.com/question/22229309