Attorneys for WikiLeaks founder Julian Assange have asked the Swedish government to withdraw a warrant that has kept him confined in Ecuador’s London Embassy for two years. Assange has been holed up in a small embassy office since June 2012 to avoid extradition to Sweden, where he faces questioning on allegations of sexual assault. Assange has voiced fears he would ultimately be sent for prosecution in the United States if he were to return to Sweden. Assange’s attorneys say the warrant should be lifted because it can’t be enforced while Assange is in the embassy and Swedish prosecutors refuse to question him in London. Ecuador recently said talks with Britain over Assange’s fate were at an impasse, with Britain refusing to grant Assange safe passage to Quito. Although Assange faces a warrant for questioning on the sexual assault allegations, he has not been formally charged.