"We live in an epoch of the universal liquidation of Marxism in the ruling summits of the labour movement. The most vulgar prejudices now serve as the official doctrines for the political and trade-union leaders of the French working class. Contrariwise, the voice of revolutionary realism rings against this artificial sounding board like the voice of “sectarianism”. It is all the more insistently necessary to repeat over and over again the fundamental truths of Marxist policies before audiences of advanced workers." (Trotsky)

The Revolution Betrayed is one of the most important Marxist texts of all time. It is the only serious Marxist analysis of what happened to the Russian Revolution after the death of Lenin. In this book, Trotsky provided a brilliant and profound analysis of Stalinism, which has never been improved upon, let alone superseded. With a delay of 60 years, it was completely vindicated by history. Without a thorough knowledge of this work, it is impossible to understand the reasons for the collapse of the Soviet Union and the events since then in Russia and on a world scale.