===Stalin===
[[Image:Stalin-140508 27880t.jpg|right|225px|thumb|[[Joseph Stalin]], the Premier of the [[Soviet Union]] from 6 May 1941 to 5 March 1953, founded the League of Militant Atheists, whose chief aim was to propagate militant atheism and eradicate [[religion]].<ref name=Hesemann-Strieber>{{cite book|author=Michael Hesemann, Whitley Strieber|title=The Fatima Secret|url=http://books.google.com/books?id=tx-BEpkJBq8C&pg=PT107&dq=Joseph+Stalin+militant+atheism&hl=en&ei=-DeRTpLrJoPi0QHo88wi&sa=X&oi=book_result&ct=result&resnum=4&ved=0CDkQ6AEwAzgK#v=onepage&q=Joseph%20Stalin%20militant%20atheism&f=false|quote=Lenin's death in 1924 was followed by the rise of Joseph Stalin, "the man of steel," who founded the "Union of Militant Atheists," whose chief aim was to spread [[atheism]] and eradicate religion. In the following years it devastated hundreds of churches, destroyed old icons and relics, and persecuted the clergy with unimaginable brutality.|publisher=Random House Digital, Inc.|date=2000|accessdate=09 October 2011}}</ref>]]In 1928 [[Joseph Stalin ]] introduced the First Five-Year Plan for building a socialist economy. In industry, the state assumed control over all existing enterprises and undertook an intensive program of industrialization; in agriculture, the state appropriated the peasants' property to establish collective farms. These sweeping economic innovations produced widespread misery, and millions of peasants perished during forced collectivization. Social upheaval continued in the mid-1930s when Stalin began a purge of the party; out of this purge grew a campaign of terror that led to the execution or imprisonment of untold millions of people from all walks of life. Yet despite this turmoil, the Soviet Union developed a powerful industrial economy in the years before World War II.
===World War II===
Stalin tried to divide up Eastern Europe with Germany by concluding the Nazi-Soviet Nonaggression Pact with Adolf Hitler in 1939. The USSR took over the Baltics (Latvia, Lithuania and Estonia) and the eastern half of Poland, while going to war with [Finland]]. Communists across the world ended their diatribes against fascism, while Stalin provided the German war machine with supplies of oil and grain. Europe was not big enough for two dictators, so in June 1941 Germany invaded the Soviet Union. The U.S. and Britain formed an alliance with Stalin to fight the Nazis, and poured in [[Lend Lease]] aid. After many humiliating defeats and the loss of three mission soldiers, the Red Army finally stopped the Nazi offensive at the Battle of Stalingrad in 1942-43 and then overran much of eastern Europe before Germany surrendered in 1945. Although severely ravaged in the war, the Soviet Union emerged from the conflict as one of the world's great powers.