The ex American Embassy hostage in Tehran was teaching in Pahlavi university in Shraz during Shah era . He was appointed then as diplomat to the US embassy in Tehran a year before the embassy was captured by so called students and spent 444 days in captivity . Some Iranians do not consider Limbert as a friend beccause his collaboration with “”National Iranian American Council”” NIAC , but like his deep knowledge of Iran , its history and the Persian language . This is parts of John Limbert speech in a cultural association in the United States . John Limbert is teaching in United States Naval Academy at present .