Weytahn (Paan Mokar to the Vulcans) was the name of a planet that, in the 22nd century, was situated between the Vulcan system and the Andorian Empire. It was disputed territory of both powers, settled by Andorians in the 2050s who were then evicted by Vulcan forces in 2097. In 2152, Andorian Commander Shran landed an occupation force on Weytahn, leading to hostilities between Andoria and Vulcan. The two sides agreed to have Earth Starfleet Captain Jonathan Archer negotiate an end to the conflict. (ENT episode: "Cease Fire")