of seven thousand. According to the Greater Soviet Encyclopedia, 20% of the population of Nagorno-Karabakh was lost in the fighting. That amounts to 30,000, mostly Armenians, who were 94% of the population of the area. The Paris Peace Conference did not resolve the Transcaucasian territorial disputes, so Armenia decided to liberate Karabakh from Azerbaijan. An uprising in Karabakh, timed to coincide with Azerbaijani Novruz celebrations, failed due to poor coordination. Azerbaijani garrisons remained in Shushi and neighboring Khankend, and a pogrom followed in Shusha. Azerbaijani soldiers and residents burned and looted half of the city, murdering, raping and expelling its Armenian inhabitants. After the uprising, the Armenian government ordered its forces under Garegin Nzhdeh and Dro Kanayan to help the Karabakh rebels, and Azerbaijan moved its army west to crush the Armenian resistance and cut off any reinforcements, despite the threat of the approaching 11th Red Army of Bolshevik Russia from the north. By Azerbaijan's Sovietization barely a month after the uprising began, Azerbaijani forces were able to maintain control over the central cities of Karabakh, Shusha and Khankend, whilst its immediate surroundings were in the control of local partisans and Armenian army reinforcements. Since the Armenian government had explicitly ordered Dro not to engage the Red Army, he was unable to capture Shusha, where the Red Army had replaced its Azerbaijani defenders. Eventually the Bolshevik army overwhelmed the Armenian army detachments and drove them from the region. The fears of the Armenians of Karabakh were alleviated by virtue of returning to the stability of Russian control. Armenian declaration, April 1920 In April 1920, the Ninth Congress of the Karabakhi Armenians was held and proclaimed Nagorno-Karabakh part of Armenia. The concluding document reads: "To consider the agreement, which was concluded with the government of Azerbaijan on behalf of the Seventh Congress of Karabakh, violated by the latter, in view of the organized attack of Azerbaijani troops on the civilian Armenian population in Shusha and villages. To proclaim the joining of Nagorno-Karabakh to Armenia as an essential part of Armenia". But, with the direct intervention of Russian troops, Azerbaijan regained control of the area. Soviet era, 1921–1991 On July 4, 1921, the Plenum of the Caucasian Bureau of the Central Committee of the Communist Party of the Soviet Union voted to integrate Karabakh into Armenia. However, the next day, July 5, 1921, Joseph Stalin intervened to keep Karabakh in Soviet Azerbaijan.