> Almost by definition it reduced misunderstanding
I disagree with the idea that adding more truthful information will necessarily reduce misunderstanding. It is very possible to say something which, while containing no falsehoods, does not tell the whole story and thereby increases misunderstanding. Note that, for instance, the oath sworn in an American courtroom is not only to tell the truth and nothing but the truth, but deliberately includes the phrase the whole truth
Snowden told as much as he possibly could. He was in a privileged position, but hardly the highest-cleared position in the agency. Your concerns would be more aptly applied to clapper or other higher-up clowns that have destroyed our freedom.
I disagree with the idea that adding more truthful information will necessarily reduce misunderstanding. It is very possible to say something which, while containing no falsehoods, does not tell the whole story and thereby increases misunderstanding. Note that, for instance, the oath sworn in an American courtroom is not only to tell the truth and nothing but the truth, but deliberately includes the phrase the whole truth