Tags: Ambassador.
Alberto Martinez Piedra (b. January 29 1926 – present) is a Cuban-American Professor of Political Economy at The Institute of World Politics.Dr. Piedra was the Director of the Latin American Institute at The Catholic University of America from 1965-1982. He was the United States Ambassador to Guatemala (1984–1987).Piedra has three doctorates – Doctor in Law 1951 University of Havana; University of Madrid (1957) and Georgetown University (1962).