"Classified" just means "if you try to use this evidence of our crimes against us, we are going to lock away in a cage for the rest of your life."
What you really mean by "against the United States" is "against the traitors who have hijacked US military might to pursue their own thousand-year-old ethnic hate vendetta." Like Snowden and Assange, this guy published documents that expose just how criminal our government is. None of the three sought to enrich themselves. Each of them did just exactly what our press was set up to do. They informed the American people what our government is really up to. They acted no more criminally than did the New York Times did when it published the Pentagon Papers. The only difference now is that it's a different ox being gored, because the press is the government. Indeed, it was the New York Times who found this kid and turned him over to the FBI. If you can't see the truth right in front of your face, then you are hopeless.