Around 200 BC, in his attempt to finally subjugate Armenia, Seleucian king Antiochus III conquered both Greater Armenia and Tsopk, installing Armenian generals Artaxias I and Zariadres as governors-strategoses respectively in each kingdom. Following Antiochus' defeat by Romans at the battle of Magnesia in 190 BC, both Zareh and Artashes declared themselves independent kings. Zareh and his descendants ruled the kingdom of Tsopk until it was reunified with Greater Armenia by Tigranes the Great in the 80s BC.