The Russian Revolution of 1917 profoundly influenced the global communist movement by providing a successful model for revolutionary change. It inspired communist parties and movements worldwide, demonstrating that a proletarian revolution was possible. The establishment of the Soviet Union became a focal point for these movements, promoting Marxist-Leninist ideology and fostering solidarity among leftists across various nations. The revolution also led to the formation of the Comintern, which aimed to coordinate international communist activities. This ripple effect heightened tensions during the Cold War, as countries aligned with or against communism, shaping global political ideologies for decades to come.