The only thing we have to fear is fear, itself.
I think the consideration for non-disclosures might be to protect from war. I can only imagine some truths could easily start one, worldwide
I've got a meme for that
It likely involves every country, but the media is broken and do what they want with the "truth." The truth is that evil exists and it cannot be eradicated. We must defend ourselves against evil. Blaming a person or people's or country will maybe bring justice, but justice doesn't insulate us from future harm. If the CIA is guilty for example, America is guilty. But there's still the problem that it was allowed to exist in the first place. I don't know any of the right answers. Just my thoughts.