Ambassador Extraordinary and Plenipotentiary to Pakistan, Philippines, Zambia, and as a high level diplomat in Canada, China, Hong Kong, and Japan.

Notable Choate alumni include, "John F. Kennedy, Ivanka Trump, Michael Douglas and Jamie Lee Curtis".

Reportedly, he was inspired to join the Foreign Service by his great-grandfather, Ambassador Joseph Hodges Choate.

[2] From 1969 to 1971, Platt was chief of the Asian Communist Areas Division of the Bureau of Intelligence and Research.

As a young diplomat, Platt accompanied President Richard Nixon on the historic trip to Beijing in 1972 that signaled the resumption of relations between the U.S. and China.

From 1981 to 1982, he returned to the Department of State as Deputy Assistant Secretary, International Organization Affairs.

[2] Ambassador Platt shared his career experiences through several oral histories that he shared with the Association for Diplomatic Studies and Training and are now available as part of Frontline Diplomacy: The Foreign Affairs Oral History Collection, first in 1994 and again in 2005.

[7] Platt presented his credentials on August 27, 1987 and served in this role through George H. W. Bush's election as president until he left his post on July 20, 1991, after receiving his subsequent appointment by President Bush, when he was replaced by Wisner.

[9] On June 28, 1957,[4] he married Sheila Maynard at the Protestant Episcopal Church in Rhinebeck, New York.