200 YEARS AGO: The expanding Klingon Empire found a frozen world rich in deposits of the mineral topaline. They named the planet taD -- Klingon for "frozen" -- and they called the people jeghpu'wI' -- conquered. FOUR YEARS AGO: The Klingon Empire invaded Cardassia, breaching the Khitomer Accords and causing a break with the Federation. On taD, depleted Klingon forces were overthrown in a small coup d'état, and the victorious rebels took advantage of the disruption to appeal for recognition from the Federation.