US President Barack Obama and Cuban President Raul Castro have met on the fringes of the Summit of the Americas, the first formal talks between the two countries’ leaders in half a century.

Earlier, Mr Obama described the historic thaw in US-Cuba relations as a “turning point”.

This is their first full meeting since the thaw began in December.

Mr Castro has called for the lifting of the US economic blockade on Cuba, in place since 1959.