“Russian Revolution” can mean three things: either the entire revolutionary movement, from the revolt of the Decembrists until the present; or only the two consecutive uprisings of 1905 and 1917; or, finally, only the great explosion of 1917. In this work, “Russian Revolution” is used in the first sense, as the entire movement. This is the only way the reader will be able to understand the development and totality of events as well as the present situation in the U.S.S.R. A relatively complete history of the Russian Revolution would require more than one volume. This would have to be a long-term project carried out by future historians. Here we are concerned with a more limited project whose aims are: (a) to provide understanding of the entirety of the movement; (b) to underline its essential elements, which are largely unknown abroad; (c) to make possible certain evaluations and conclusions. As the wor...