During Sinatruces' reign, the Artaxiad king of Armenia, Tigranes the Great (r. 95–55 BC), took advantage of the weakness of the Parthians, and retook the "seventy valleys" he had previously ceded to Mithridates II, and also went to conquer the Parthian domains of Media Atropatene, Gordyene, Adiabene, Osroene, and northern Mesopotamia.[6] Tigranes had also made campaigns into other kingdoms, adding Syria, Cilicia and Coele-Syria to his vast kingdom.[7]