Fidel Castro’s Eldest Son Commits Suicide, Cuban Media Says<br />Bearing a close resemblance to his father, Mr. Castro Díaz-Balart, known as Fidelito,<br />was the only son of the president and his first wife, Mirta Díaz-Balart.<br />MEXICO CITY — Fidel Ángel Castro Díaz-Balart, a nuclear physicist who was the oldest son<br />of former Cuban President Fidel Castro, died on Thursday, Cuban state media reported.<br />Mr. Castro Díaz-Balart remained a champion of nuclear energy, making the case for its growth<br />in developing countries in a 2002 essay in the International Atomic Energy Agency Bulletin.<br />Mr. Castro Díaz-Balart held a doctorate in physical-mathematical sciences from<br />the Kurchatov Institute in Moscow, according to the Academy of Sciences.<br />Mr. Castro Díaz-Balart played a prominent role in efforts to develop nuclear energy on the island.<br />Mr. Castro Díaz-Balart led Cuban delegations at conferences around the world, including the<br />March 2016 meeting of the American Physical Society, where he spoke on physics in Cuba.<br />Cousins on his mother’s side include Representative Mario Díaz-Balart<br />and former Representative Lincoln Díaz-Balart, Florida Republicans and staunch anti-communists.
