The Treaty of Peace was a diplomatic agreement between Earth and the Romulan Star Empire which brought about a peaceful resolution to the Earth-Romulan War. The negotiations were conducted through subspace radio and established the Romulan Neutral Zone to serve as a border where Federation and Romulan ships were prohibited from crossing. (FASA RPG module: Star Fleet Intelligence Manual: Agent's Orientation Sourcebook) In the novel continuity, a similar treaty that was formed were the Cheron Accords.