Against the backdrop of the protracted Russian-Ukrainian conflict and the fierce confrontation between the United States,the West and Russia,discussions on why the Soviet Union collapsed and why Soviet socialism was abandoned halfway have re-emerged.Among them,several articles written by Yuri Voronin are the most profound.Voronin believes that the success and failure of Soviet socialism should be viewed dialectically.Socialism has never been an independent and special social system,but a combination of the two social systems of capitalism,which is about to withdraw,and communism,which is about to come.Looking back on the development process of more than 70 years,the reason why the Soviet planned economic system was ultimately unable to withstand direct competition with Western multinational monopoly capitalism was mainly because several Soviet top leaders,except Lenin,underestimated the long-term and complexity of the socialist construction process,including prematurely announcing that socialism had"won"in the Soviet Union and entered a classless society,ignoring the instability and vacillation that may occur in the construction of socialist material and spiritual civilization under the influence and interference of Western monopoly capitalism,etc.After the disintegration of the Soviet Union,Russia pursued a development policy of market fundamentalism,which led to Russia's slow development and backwardness in some areas.If Russia wants to grow and develop in the future,it must take the socialist road,must learn from the experience of China and Vietnam,and must have a more scientific understanding of what socialism is.