The belief of the elimination of the social class system, stemming from the writings of Karl Marx and Friedrich Engels. This system revolutionized Russia in the early 1900's, making the country a world power in years to come. The policies Lenin created would have most likely carried the Soviet Union into the 20th century if not for Stalin's exile of Leon Trotsky, Lenin's understudy and obvious choice of successor. However due to Stalin's shift from communism to a totalitarian regime, the country collapsed in the early 1990's due to economic, social, and political pressure.
The true test that Lenin's thoeries, ideas, and Leninism itself would have worked if not for Stalin can be seen in present day China. The most rapidly growing country in the world, both economicly and population wise. China being a socailist country, will exceed America as the most powerful country in the world in the coming years fiscally and militarily.