[schoen]

Yeah, if journalists simply bypassed the agreement, a future source might say "OK, I want to expose this bad thing that a government agency is doing, but if I do, the journalists will probably be careless about it and people will get killed" (or whatever the case may be).

If Snowden himself had had to redact everything ahead of time, or study everything in fine detail beforehand to determine all the implications of publishing it, he wouldn't have been able to leak nearly as much material.