In 2293 the Klingon moon Praxis exploded, a result of over mining and insufficient safety precautions on the dilithium mining operation located there. The explosion caused major damage to the Klingon home world, forcing Chancellor Gorkon to end the decades of hostility between the Klingon Empire and the Federation. Gorkon attempted to attend a peace conference on Earth, but on the way through Federation space his ship was attacked by its escort, the USS Enterprise A, and Gorkon was assassinated by Starfleet personnel who beamed over during the confusion. Captain Kirk and Doctor McCoy were arrested for the crime by the Klingons, and taken into Klingon space for trial. Gorkons daughter Azetbur succeeded him to the High Council. She continued the peace process on condition that the conference