A British court has ruled that WikiLeaks founder Julian Assange can appeal against an order that he be extradited to the U.S. on espionage charges. Two High Court judges on Monday said Assange has grounds to challenge the U.K. government’s extradition order. The ruling sets the stage for an appeal process likely to further drag out a years-long legal saga. 

Assange faces more than a dozen espionage charges over his website’s publication of classified U.S. documents almost 15 years ago. The Australian computer expert has spent the last five years in a British high-security prison.

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