 Faced with Anton Denikin's successful offensive, they decided to stop further military activity and ally with the Bolsheviks as the lesser evil.In January 1920, they formed the Ukrainian Communist Party which recognized Russian communist rule over Soviet Ukraine, but criticized Bolshevik administrative, cultural, political, party and economic centralization.In a letter submitted to the Third International that year, they extended the analysis of Shakhrai and Mazlakh.