Meetings are often held under "Chatham House Rules" and most of us broadly know what that means. However, if you were at one of these meetings, what are you allowed to say?
It turns out there is only one Chatham House Rule (below) and it's really straightforward. You can report what was said, just not by who (even indirectly).
When a meeting, or part thereof, is held under the Chatham House Rule, participants are free to use the information received, but neither the identity nor the affiliation of the speaker(s), nor that of any other participant, may be revealed.