 After World War I, Sisakan/Gharakilisa became part of the short-lived independent Republic of Armenia between 1918 and 1920.As a result of the Sovietization of Armenia in December 1920, Sisian was included in the breakaway Republic of Mountainous Armenia under the commandment of Garegin Nzhdeh, who fought against the Bolsheviks preserving independence between 26 April and 12 July 1921.After the Soviet Red Army entered the Zangezur region in July 1921, Sisakan along with the towns of Goris, Kapan and Meghri fell under the Soviet rule.