I don't know why Wikileaks would be guilty of espionage but all other newspapers which have possession of all 260,000 documents aren't. Not to mention all the "bad citizens" all over the country and the world which have published them and written about them. Wikileaks didn't "leak" the documents --- they published them on the internet in conjunction with these other newspapers, which also published them. The "leakers" are those who leaked the documents to Wikileaks and its partners. It's no different than the New York Times publishing the Pentagon Papers (and 15 other papers re-publishing in solidarity.) Ellsberg was the leaker and was tried in a separate case --- the paper was the publisher.