What is the USSR? Was the experience of 70 years of development of the USSR in vain? What did he give for the future? What lessons - both positive and negative - can supporters of socialism learn from this experience? Was the project named "USSR" completed? Are these and many other questions answered by the authors of the book: well-known Russian scientists, researchers of the Russian Academy of Sciences, professors of Moscow State University named after MV Lomonosov and other universities in Russia, foreign authors.