now that assnage is free and relatively safe in australia he needs to nut up and tell the world about what happened to seth rich. i don't know if he is staying silent out of fear, if he's sticking to a principle of never revealing sources no matter what, or if he is scared that the story of seth rich will put off other potential whistleblowers from leaking.  but at some point the assassination of your source becomes a news worthy story in and of itself, and if you cover it up you are engaging in damage control on behalf of the corrupt.
Australia