episode. The Webb Telescope is also mentioned in a conversion between Josh and Moreau, the telescope was finally launched on 25th December 2021 almost 18 years after this episode first aired. Music During the episode, it was mentioned that the song "Dark Was the Night, Cold Was the Ground" by Blind Willie Johnson, had just left the Solar System aboard Voyager 1. The song plays at the end of the episode. References External links "The Warfare of Genghis Khan" at The West Wing Episode Guide "The Warfare of Genghis Khan" at The West Wing Continuity Guide Warfare of Genghis Khan 2004 American television episodes