Kammala jumla mai zuwa: Juyin Juya Halin 1917<unk>1923 sun haɗa da rikice-rikicen siyasa da tawaye a duk faɗin duniya waɗanda nasarar Juyin Juya Halin Rasha da rikice-rikicen da aka haifar bayan Yaƙin Duniya na I. A cikin yaƙin da aka yi a Rasha, juyin juya halin Fabrairu na sassaucin ra'ayi ya kifar da mulkin mallaka. Lokaci na rashin kwanciyar hankali ya biyo baya, kuma Bolsheviks sun karɓi iko a lokacin Juyin Juya Halin Oktoba. Dangane da fitowar Tarayyar Soviet, sojojin kwaminisanci daga nau'ikan bangarori daban-daban na akida sun yi yaƙi da Bolsheviks, musamman ta hanyar juyin juya halin fararen fata da rundunar sojojin Green, ƙungiyoyi daban-daban na kasa a Ukraine bayan Juyin Juya Halin Rasha da sauran sabbin jihohi kamar waɗanda ke Soviet Transcaucasia da Soviet Central Asia, anarchist-wahayi na Juyin Juya Halin Rasha na Uku da
Tawayen Tambov. Nasarar Leninist ta kuma haifar da hauhawar kwaminisanci na duniya: Babbar Juyin Juya Halin Jamus da 'ya'yanta, kamar Jamhuriyar Soviet ta Bavarian, da makwabciyar Juyin Juya Halin Hungary, da Biennio Rosso a Italiya, ban da wasu ƙananan tashe-tashen hankula, zanga-zanga da yaƙe-yaƙe, dukansu sun tabbatar da rashin nasara. Bolsheviks sun nemi daidaita wannan sabon juyin juya halin a cikin Comintern da Soviet ke jagoranta.