I'm pretty sure CIA is protecting him very carefully, preventing him from having conversation with any non-US intelligence agencies, and preventing him from getting killed (which might trigger some "insurance" mechanism that would release the documents).
I wasn't referring to Snowden. I was saying that for every Snowden there is one or more greedy analysts that will just sell info quietly and we'll never know.
That's also why the idea that Snowden has caused a huge amount of damage because he alerted enemies to the US's methods is comical. The public releases have been heavily edited and the NSA knows exactly what data has been shared with the general public. If someone else has grabbed the same info as Snowden but just sold it quietly the adversaries got much more info and the NSA doesn't know it so they can't mitigate the impact.
I guess by being near him. If my theory is correct, Snowden want's them near him, protecting him against non-US spies, who would like to kill him (and thus cause the release of the remainder of the documents).
