The lengthy articles goes into the details of the takeover of the Communist Party in the Soviet Union by Stalin after the death of Vladimir Lenin in early 1924. Stalin's actions were not based in a theoretical analysis that Lenin or Trotsky expressed, but became motivated by the allure of power. The details are reported in the article which consisted of various twists to the extreme right, and turns to the extreme left, then settling on building socialism in one country, all of which he also used to eliminate any competitors to power in the Soviet government. Thus many of Stalin's critics accuse him of sheer opportunism in quest of dictatorial power. However, his popularity has gained in recent decades in Russia among people who view him as saving them--because he began a campaign (although ruthless) of forced industrialization in the 1930s--from slavery to the German Third Reich during WWII.
In the final part of George Collins' history of the rise of Stalinism, he explains the bureaucracy's final victory over Trotsky's Left Opposition; their shameful co-operation with fascism and imperialism; and the brutal, counter-revolutionary role they played in suppressing the working class in Russia and internationally.