Obama, Castro declare historic breakthrough in US-Cuba ties
US President Barack Obama has hailed a "new chapter" in US relations with Cuba, announcing moves to normalise diplomatic and economic ties.
Obama said Washington's current approach was "outdated" and the changes were the "most significant" in US policy towards Cuba in 50 years.
Cuban President Raul Castro said he welcomed the shift in a TV address.
The move includes the release of US contractor Alan Gross and three Cubans held in the US.