Cuba's Raul Castro urges US to lift trade embargo

Cuban President Raul Castro has urged the US to end its trade embargo after the two countries opened formal talks on restoring diplomatic relations.

He said the five-decade embargo "caused enormous human and economic damage".

But only the US Congress has the power to lift the embargo, and correspondents say many Republicans are still deeply opposed to this.

On Wednesday, US President Barack Obama and Mr Castro agreed a number of measures to improve ties.

They included the release by Cuba of US contractor Alan Gross and three Cubans held in the US.

Relations between the US and Cuba have been frozen since the early 1960s when the US broke off diplomatic relations and imposed a trade embargo after Cuba's revolution led to communism.

But in unprecedented moves on Wednesday, Mr Obama said the "rigid and outdated policy" of isolating Cuba had clearly failed.

He said economic reforms were still needed in Cuba and human rights there needed to be upheld. But he said it was time for a new approach.

Cubans tuned in to watch President Raul Castro's televised address

The Cuban government blames the US embargo for economic hardship on the island

Mr Obama added that the US was looking to open an embassy in Havana in the coming months.

The BBC's Barbara Plett Usher in Washington says that although Mr Obama has the authority to normalise relations with Cuba and increase the flow of people and money, only Congress can lift the embargo.

The president still faces strong opposition from some in Congress who view the Cuban regime as a repressive dictatorship, she says.

Cuban-American Republican Senator Marco Rubio said he would do all he could to "unravel" the plan.

Fellow Senators John McCain and Lindsey Graham said the shift in policy reflected "America and the values it stands for in retreat and decline".

Bells ring out

Wednesday's announcements follow more than a year of secret talks in Canada and at the Vatican, directly involving Pope Francis.

In his televised address on Wednesday, President Castro said Cuba was willing to discuss differences that remain with the US on national sovereignty, democracy and internal policies.

"We should learn the art of living together in a civilised manner in spite of our differences," he said.

As he spoke, church bells rang out and schools paused their lessons to mark the news.

Alan Gross, back in the US, thanked all those who had supported him

Officials said that Mr Obama and Mr Castro spoke by telephone on Tuesday for nearly an hour - the first presidential-level talks between the two nations since Cuba's 1959 revolution.

Mr Gross, 65, who is in poor health, was detained by the Cuban authorities five years ago for importing banned satellite technology.

His arrest and imprisonment had undermined previous attempts to thaw diplomatic relations between the two countries.

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Cuba and the US said he had been freed on humanitarian grounds.

Cuba also freed an unnamed American intelligence officer who had been in jail in Cuba for nearly 20 years.

In exchange, Washington released three high profile Cuban prisoners who were serving lengthy sentences for espionage.

They were part of the so-called "Cuban Five" who US prosecutors said had sought to infiltrate US military bases and spied on Cuban exiles in Florida.

Two of them had recently been allowed to return to Cuba after finishing their sentences.

Key dates

1959: Fidel Castro and his guerrilla army defeat the US-backed Cuban regime of Fulgencio Batista

1960-1961: Cuba nationalises US businesses without compensation; US breaks off diplomatic relations and imposes a trade embargo in response

1961: Failed Bay of Pigs invasion by CIA-backed Cuban exiles

1962: Soviet Union deploys ballistic missiles to Cuba, prompting Cuban Missile Crisis

2001: Five Cubans, dubbed the Cuban Five, are jailed in Miami for spying

2008: Raul Castro becomes Cuban president

2009: US citizen Alan Gross detained in Cuba accused of spying

Dec 2013: US President Barack Obama and Raul Castro shake hands at Nelson Mandela's funeral - the first such public gesture since 1959