WikiLeaks founder Julian Assange fears he may be assassinated if he steps outside the Ecuadorian embassy.
In an interview Mr Assange said he has not had any fresh air or sunlight for three years because it is too dangerous for him to leave the building.
He said "There are security issues with being on the balcony. There have been bomb threats and assassination threats from various people."
Despite believing it is "not likely" that he will be shot, he worries that if he is ever free he could be kidnapped or "droned" by the CIA.
The Swedish prosecutor has dropped investigations into some sexual assault allegations lodged against Wikileaks founder Julian Assange.Read the full story ›
The WikiLeaks founder has been living in the Ecuadorian embassy in London for three years but claims his life is in danger.Read the full story ›
Controversial whistleblower Assange has a constant police guard outside the Ecuadorian embassy where he lives.Read the full story ›
Julian Assange's appeal against a detention order issued by Swedish police has been rejected by the country's Supreme Court.
The Wikileaks founder has been living at Ecuador's London embassy since June 2012 to avoid extradition to Sweden, where he is wanted for questioning over allegations of sexual assault.
Assange denies the allegations against him.
WikLeaks founder Julian Assange announced he will be leaving the Ecuadorian embassy "soon" after two years at the building.
Assange told a press conference, "I am leaving the embassy soon - but perhaps not for the reasons that the Murdoch press and Sky News are saying at the moment".
By Juliet Bremner: UK Editor
There is a huge number of media outside, but a police officer has just been out to relay a message that there will be no further events or movement here at the Ecuadorian embassy today.
I suspect this is a big publicity stunt to try and get the British Government to engage in a discussion about his release.
Julian Assange has hinted at unspecified health "difficulties" - mentioning in particular the lack of outdoor space and sunlight at the Ecuadorean Embassy in London where he has been holed up for two years.
In relation to my health, as you can imagine ... being detained in this country in various ways for four years, and then in this embassy for two years ... It is an environment in which any healthy person would find themselves soon enough with various difficulties.
Julian Assange has stressed he has not been charged with an offence in the UK or in Sweden "at any time".
"The basis under which my asylum was granted here [at the Ecuadorian embassy] is the ongoing US investigation into me and WikiLeaks", he said during a press conference.
"I am leaving the embassy soon, but perhaps not for the reasons that the ... press are saying at the moment," Julian Assange has told reporters.