This document describes the term “parliamentary diplomacy”. The United Nations provides the only forum in which admittedly hostile nations repeatedly meet in debate over the widest imaginable range of topics. The United Nations, acting under parliamentary conditions, can most usefully be considered as a continuous public exchange of information among the agents of the governments of the member nations. The case of Cyprus will be used here to suggest how such information has been used by nations to resolve conflicts, and how the UN makes a characteristic contribution to world stability.