On Tuesday Christiane has the second part of her interview with Mariela Castro on CNN International. The niece of Fidel Castro and daughter of Cuban President Raul Castro, discusses Cuba's political future and her fight for acceptance of gays in that country.

(CNN) - The daughter of Cuba's president supports the re-election bid of U.S. President Barack Obama, but believes he could do more were it not for the pressures he is facing, she said in an interview broadcast Monday on "CNNi's Amanpour."

"As a citizen of the world, I would like him to win," said Mariela Castro Espin, daughter of Raul Castro, in the exclusive interview, which was conducted Friday in New York. "Given the choices, I prefer Obama."

The 49-year-old gay rights advocate said that Obama has been constrained in his ability to effect change. "He wants to do much more than what he's been able to do," she said. "That's the way I interpret it personally. I don't know if I'm being objective."

Still, she said, "I believe that Obama needs another opportunity and he needs greater support to move forward with his projects and with his ideas, which I believe come from the bottom of his heart."

Asked if Obama would lift the half-century-old trade embargo on Cuba if he could, Castro said, "I believe that Obama is a fair man. And I believe Obama needs greater support to be able to make these decisions. If Obama had all the political support of the American people, then we could normalize our relationships, as good or better than we had under President Carter."

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