The editor of the website Wikileaks has overseen the publication of several leaks of classified information from several governments.
Assange is wanted in connection with criminal investigations in the US and Sweden. To avoid extradition, he was granted political asylum by Equador and since 2012, he has been living in the country's London embassy.
Assange's lawyers argue that the warrant serves no purpose now that he is no longer wanted for questioning in Sweden over alleged sexual assault. Assange has been holed up in the Ecuadorean Embassy in London since 2012.
WikiLeaks founder Julian Assange was defiant after Swedish prosecutors dropped an investigation into an allegation of rape. The move brings to an end a seven-year legal standoff, but UK police may still arrest him.