The former president and first lady have returned to Washington DC after their holiday.
The talks follow the success of four years of negotiations with Colombia's largest rebel group, the Farc.
The children were likely to have been born alive, but their deaths are impossible to determine.
The cause of death could not be ascertained as the bodies were highly decomposed at the time of discovery.
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Thirty four others were also injured in the accident, two of them in a serious condition.
Alleged teenage killer is known only by his nickname of 'Frijolito' – 'Little Bean'
These 'rings of peace' were in response to an attack on a prayer centre on 29 January in which 6 men were killed.
The museum details the struggles of Bolivians throughout history.
Marisa Leticia, who was earlier pronounced brain-dead, passed away on Friday evening.
Cartel conflicts and state elections are among the possible causes.
A selection of photographs from around the world, covering a variety of topics from current events to animals, weather and travel.
Alfredo Olmedo's comments come after his country's president was compared to 'xenophobic' Trump.
Often depicted as a mermaid, she is said to be able to cure infertility in women.
Maria Leticia Lula da Silva was pronounced brain-dead on 2 February a week after she was admitted to hospital with a brain haemorrhage.
Authorities said they were opening the mosque to show the consequences of hate and Islamophobia.
Spokesperson for Mexican president says, 'The things that have been said are nonsense and a downright lie.'
A stay at Necker Island will set you back £37,500 a night.