Fidel Castro has criticised Iranian President Mahmoud Ahmadinejad for what he called his anti-Semitic attitudes.
The former Cuban leader also warned that an escalating conflict between Iran and the West could lead to nuclear war.
Mr Castro, speaking to a US journalist, also questioned his own actions during the Cuban Missile Crisis of 1962.
Asked if he stood by his recommendation for the Soviets to bomb America, he said "it wasn't worth it at all".
Mr Castro was speaking to Jeffrey Goldberg, a journalist with The Atlantic magazine based in Washington, DC, whom he personally invited to Cuba.
Mr Castro led Cuba for almost 50 years after toppling the government in a revolution. He fell ill in 2006 and handed power to his brother Raul in 2008. Since then, his public appearances have been rare, but in recent months he has made a series of public speeches and televised appearances.
BBC News
