There exists, in every capital city worth its consular salt, a bar where the real work gets done. Not the marbled negotiating halls with their flags and simultaneous interpreters, nor the fluorescent-lit briefing rooms where junior attaches rehearse talking points into the small hours. No -- the bar. The one with the zinc counter and the bartender who remembers that the Peruvian ambassador takes his pisco sour without egg white, and that the Finnish trade delegate will order exactly three Negronis before agreeing to anything.
These establishments operate under rules more ancient and more strictly observed than any Geneva Convention. The first rule: never discuss the communique before the ice has fully diluted. The second: a martini ordered "dirty" is a declaration of intent. The third, and most sacred: what is said over the third round stays over the third round, unless it materially affects the price of copper.