The Federation-Cardassian border (often referred to simply as the Cardassian border) was a border which divided the United Federation of Planets and the Cardassian Union. A part of the border was divided by the Demilitarized Zone in the early 2370s. (TNG episodes: "Journey's End", "Preemptive Strike"; DS9 episodes: "The Maquis, Part I", "The Maquis, Part II") See also: * Demilitarized Zone