"In Ireland, drops of water that evaporate before wetting the ground are called dry rain. It is hardly noticeable. You can feel it but it disappears without leaving a trace. That's mediation." Mediating in peace negotiations is a tricky game that is fraught with perils and is conducted in the greatest secrecy. While its results often hit the headlines, mediators do their utmost to cover their tracks and hide traces of the negotiations.