HONG KONG — The Hong Kong government announced on Sunday afternoon that it had allowed the departure from its territory of Edward J. Snowden, the former National Security Agency contractor who has acknowledged disclosing classified documents about United States government surveillance of Internet and telephone communications around the world. snip The Aeroflot agent said that Mr. Snowden is traveling with one other person, with the surname Harrison, but the agent declined to release the other traveler’s first name, saying that she did not have the authorization to do so. The closest adviser to Julian Assange, who orchestrated the release of...