"Nonsense!" — Julian Assange shouted as during the second day of his resumed extradition hearing US federal government attorney James Lewis told a witness that the WikiLeaks founder is facing extradition over the publication of informants' names and not for merely handling leaked documents.

Judge Vanessa Baraitser promptly warned Assange, seated in the dock, that any further outbursts could get him removed from court and the hearings could proceed without him.

"If you interrupt proceedings and disrupt a witness who is properly giving their evidence, it is open to me to continue without you in your absence," Baraitser said. "This is obviously not something I wish to do. I am, therefore, giving you a clear warning."

The US side is hinging its extradition request argument on its prior claims that WikiLeaks under Assange's leadership revealed names of sources. These individuals then "disappeared" according to the government's argument, suggesting Assange actually got US operatives and assets detained or killed in foreign countries.