U.S. has two months to finalize extradition case against WikiLeaks' Assange

U.S. prosecutors have just under two months to present British authorities with a final and detailed criminal case to justify the possible extradition of WikiLeaks founder Julian Assange, a U.S. government official said on Friday.The official, who asked for anonymity when discussing the case, said U.S. authorities had already sent Britain a provisional arrest warrant regarding Assange's extradition to the United States.