Speaking during a visit to Paris, Correa said Assange's future was "in Britain's hands" as the Australian-born activist marks almost a year-and-a-half spent holed up in the Ecuadoran embassy in London.

"If (they) want to keep him there for 30 years, he'll stay there 30 years, but that would violate his human rights," Correa said.

Correa maintained that the offer of asylum he first made to Assange in August 2012 remained open, and added that he had the right "to demand asylum in the country of his choice".

Assange, who oversaw WikiLeaks' publication of a huge trove of classified US military and diplomatic documents, took refuge in the Ecuadoran embassy in London July 17, 2012 to escape extradition to Sweden.