The founder of WikiLeaks leaves a court in London.
The U.S. government won an appeal in London's High Court, which could lead to the handing over of the founder of Wikileaks.
The court allowed the appeal, according to Judge Timothy Holroyde.
The Australian businessman will face criminal charges in the U.S. for breaking a spy law and conspiring to hack government computers.
The U.S. has assured Britain that it will meet certain conditions.
The authorities said that the release of the military records and diplomatic cables put lives in danger.
The U.S. was appealing against the London District Judge's decision to not extradite the man.
"We will appeal this decision at the earliest possible moment", said the woman who is married to the man.
The High Court ruling was described as a grave miscarriage of justice by her.
How can it be fair that a country that plotted to kill him would be able to extradite him? Morris said something.
The judge said in January that it would be oppressive to extradite him.
The activist founded the website in 2006 to publish information from anonymous sources.
The Martha Gellhorn Prize for Journalism was one of the awards that Assange has won over the years. Throughout the trial, he maintained that he is a journalist and publisher.
He has been in confinement since 2012 when he holed himself up in the embassy in London to avoid being extradited to Sweden to face rape allegations.
While the Swedish case was dropped, he was sentenced to 50 weeks in prison for skipping bail in the U.K.
