The underlying indictment states, "in March 2010, Assange engaged in a conspiracy with Chelsea Manning, a former intelligence analyst in the U.S. Army, to assist Manning in cracking a password stored on U.S. Department of Defense computers connected to the Secret Internet Protocol Network (SIPRNet), a U.S. government network used for classified documents and communications".
It followed claims that while on a visit to Stockholm to give a lecture, Assange had raped one woman and sexually molested and coerced another.
But the sudden expulsion of Assange from the Ecuadoran Embassy may allow the most serious Swedish charge against him - that of rape - to be reopened.
It may be years before Assange sees the inside of a USA courtroom.
Between Assange's reportedly hacking the Ecuadorian embassy's network, creating diplomatic incidents with intemperate tweets, and apparently troubling embassy staff with notoriously poor hygiene, it seems that the Ecuadorian government finally had enough.
Ecuador had revoked the asylum he was granted after seeking refuge in the embassy in 2012, The Times reports. Writing in The Washington Post, media columnist Margaret Sullivan said she was inclined to agree with American Civil Liberties Union director Ben Wizner, who told her that prosecuting Assange "would be unprecedented and unconstitutional and would open the door to criminal investigations of other news organizations".
Relations between Assange and Ecuador's government worsened under President Lenín Moreno, who took office in 2017.More news: SpaceX's First Falcon Heavy Launch for Paying Customers
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What do his supporters say?
What will happen next for Assange is still uncertain, as he begins to fight extradition to the United States.
Theresa May, home secretary Sajid Javid and foreign secretary Jeremy Hunt all said Assange's arrest showed that no-one is "above the law".
Westminster Magistrates' Court found him guilty of a British charge of breaching bail on Thursday.
Assange was finally questioned for two days in November 2016, after a change in tactics from Swedish authorities who had previously argued that he had to travel to Sweden to be interviewed.
The Committee to Protect Journalists released a statement saying it "is aware of the arrest of Julian Assange and is examining the USA charges for press freedom implications". As with Love and McKinnon, Assange's appeal will likely be directed as much at the British public as the courts.
In the UK Parliament Thursday, Home Secretary Sajid Javid outlined how court proceedings for extraditions play out in Britain.