By CHARLIE SAVAGE and MATT APUZZO
WASHINGTON — Edward J. Snowden, the former National Security Agency contractor who provided journalists a trove of classified documents, retained a well-known Washington defense lawyer last summer in hopes of reaching a plea deal with federal prosecutors that would allow him to return to the United States and spare him significant prison time.
The lawyer, according to people familiar with the investigation, is Plato Cacheris, who has represented defendants in some of the highest-profile cases involving Espionage Act charges, including the convicted spies Aldrich Ames andRobert Hanssen and the convicted leakerLawrence Franklin.
But nearly a year after Mr. Cacheris became involved, no agreement appears imminent, and government officials said the negotiations remained at an early stage.
The officials and others who discussed the case and Mr. Cacheris’s involvement in it spoke on condition of anonymity, citing the sensitivity of the talks.
Mr. Snowden, who now lives in Moscow, where he received temporary asylum, was charged last year with multiple violations of the Espionage Act. He faces up to 30 years in prison, and prosecutors could easily add more counts.