'Cuba's Mandela' Gerardo Hernandez on his future plans

Gerardo Hernandez is one of the men tipped as a potential future presidential candidate in Cuba.

He is known by some as the country's Nelson Mandela, because he spent 16 years in an American prison on espionage charges.

Released in December, Mr Hernandez is now back in Havana, and the BBC's North America Editor Jon Sopel asked him how his release came about.