John Francis Maisto

John Francis Maisto (born 28 August 1938) is a U.S. former foreign service officer and former ambassador. Previously, he was the U.S. Ambassador to the Organization of American States (OAS), the U.S. Ambassador to Venezuela 1997–2000 and the Ambassador to Nicaragua 1993–1996.

Maisto attended the Edmund A. Walsh School of Foreign Service, Georgetown University (1961).

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