They really do not want Assange to testify:
"Julian Assange has been “psychologically tortured” and should not be extradited to the US, a United Nations official has said.
Nils Melzer, the UN special rapporteur on torture, said the WikiLeaks founder would not receive a fair trial after visiting him in a British prison.
He said that although Assange was not being held in solitary confinement at HMP Belmarsh, limited legal visits and a lack of access to documents “make it impossible for him to adequately prepare his defence”."
news.yahoo.com/julian-assange-psychologically-tortured-must-141949307.html