John 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),[1] 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).