Castro allowed the emigration of hundreds of Cuban Jews to Israel in the 1990s. Cuba tried to help the refugees of the S.S. St. Louis until the USA forced Cuba to set them adrift for eventual return to Nazi Germany. Most of Cuba's Jewish families were refugees from the Ottoman Empire.
Iran: IAEA visit to U.S. Senate damages UN neutrality (DPA)
from the article: Fidel Castro tells Ahmadinejad: Stop denying the Holocaust