The Chatham House Rule is about \0 in the context of a specific meeting or gathering .. \1 the freedom to speak one's mind and say whatever it is you wish to

The Chatham House Rule is about \0 in the context of a specific meeting or gathering .. \1 the freedom to speak one's mind and say whatever it is you wish to say, \2 the constraint that no third party shall repeat your words without your permission, quote you out of context, report what you said and the company in which you said it, etc. There's no legal binding or specific prosecution in the original context, simply a literal "Gentleman's Agreement" and the general social implication that should you make and then violate such an agreement then you will likely be excluded from similar events and such company in future. It arose from diplomatic ranks and is a polite form of the parallel convention Snitches get Stitches. In the UK Foreign Affairs sphere the rule is often exercised to advance a piece of policy via rumour and backtalk, nobody officially directly states that (for example) the military may be bought into play in some region, none the less word gets out that such a thing is being considered by those that can make it happen, subsequently someone folds their position and trade resumes (maybe).