Talking to BBC Radio, Javid said that it was for the courts to decide whether Assange must face espionage charges in the US. Assange is scheduled to face a hearing regarding the extradition on Friday, however, the decision is likely, a few months away.
The Justice Department's 18-count superseding indictment alleges that Assange directed former Army intelligence analyst Chelsea Manning in one of the largest compromises of classified information in US history.
Former US military intelligence analyst Chelsea Manning has been released from a Virginia jail where she was being held for refusing to testify before a grand jury. However, her freedom looks likely to be short-lived.
Assange made international headlines in early 2010 when WikiLeaks published a classified US military video showing a 2007 attack by Apache helicopters in Baghdad that killed a dozen people, including two Reuters news staff.
Supporters hail Assange as a free-speech icon who has invited the wrath of a vengeful US for exposing misdeeds that have embarrassed the superpower. They fear he will be sent to that country to face trial and will probably be punished for his heroism.
The language, in a letter to him in his native German, suggested that prosecutors had not, at least at that point, abandoned the possibility of charges based on WikiLeaks’ publication of U.S. government secrets.
Ecuadorian Foreign Minister José Valencia said Assange's behaviour was "undeserving, disrespectful" and he pointed to a video which appears to show Assange arguing with an official inside the Ecuadorian embassy in London.