Zangezur (Armenian: Զանգեզուր) is a historical and geographical region in Eastern Armenia[1][2][3] on the slopes of the Zangezur Mountains which largely corresponds to the Syunik Province of Armenia. It was ceded to Russia by Qajar Iran according to the Treaty of Gulistan in 1813. In Soviet times, the Goris, Kapan, Meghri and Sisian regions of the Armenian SSR were located within Zangezur, which in 1995 became part of the Syunik Province of Armenia.