On 3 April 1922, Stalin was named the
General Secretary of the Communist Party of the Soviet Union. Lenin had appointed Stalin the head of the
Workers' and Peasants' Inspectorate, which gave Stalin considerable power. By
gradually consolidating his influence and isolating and outmaneuvering his rivals within the party, Stalin became the
undisputed leader of the country and, by the end of the 1920s, established a
totalitarian rule. In October 1927,
Grigory Zinoviev and
Leon Trotsky were expelled from the
Central Committee and forced into exile. In 1928, Stalin introduced the
first five-year plan for building a
socialist economy. In place of the
internationalism expressed by Lenin throughout the revolution, it aimed to build
Socialism in One Country. In industry, the state assumed control over all existing enterprises and undertook an intensive program of
industrialization. In
agriculture, rather than adhering to the 'lead by example' policy advocated by Lenin, forced
collectivization of farms was implemented all over the country.
Famines ensued as a result, causing deaths estimated at three to seven million; surviving
kulaks (wealthy or middle-class peasants) were persecuted, and many were sent to
Gulags to do
forced labor. Social upheaval continued in the mid-1930s. Despite the turmoil of the mid-to-late 1930s, the country developed a robust industrial economy in the years preceding
World War II. with Stalin's daughter,
Svetlana, on his lap. As head of the NKVD, Beria was responsible for many
political repressions in the Soviet Union. Closer cooperation between the USSR and the West developed in the early 1930s. From 1932 to 1934, the country participated in the
World Disarmament Conference. In 1933, diplomatic relations between the
United States and the USSR were established when in November, the newly elected President of the United States, Franklin D. Roosevelt, chose to recognize Stalin's Communist government formally and negotiated a new trade agreement between the two countries. In September 1934, the country joined the
League of Nations. After the
Spanish Civil War broke out in 1936, the USSR actively supported the
Republican forces against the
Nationalists, who were supported by
Fascist Italy and
Nazi Germany. In December 1936, Stalin unveiled a new
constitution that was praised by supporters around the world as the most democratic constitution imaginable, though there was some skepticism. American historian J. Arch Getty concludes: "Many who lauded Stalin's Soviet Union as the most democratic country on earth lived to regret their words. After all, the Soviet Constitution of 1936 was adopted on the eve of the Great Terror of the late 1930s; the "thoroughly democratic" elections to the first Supreme Soviet permitted only uncontested candidates and took place at the height of the savage violence in 1937. The civil rights, personal freedoms, and democratic forms promised in the Stalin constitution were trampled almost immediately and remained dead letters until long after Stalin's death." in 1935. Only two of them—
Budyonny and
Voroshilov—survived the
Great Purge.
Blyukher,
Yegorov and
Tukhachevsky were executed. Stalin's
Great Purge resulted in the detainment or execution of many '
Old Bolsheviks' who had participated in the October Revolution. According to declassified Soviet archives, the
NKVD arrested more than one and a half million people in 1937 and 1938, of whom 681,692 were shot. Over those two years, there were an average of over one thousand executions a day. Scholars estimate the total death toll for the Great Purge (1936–1938), including fatalities attributed to prison conditions, to be roughly 700,000-1.2 million. In 1939, after attempts to form a military alliance with Britain and France against Germany failed, the Soviet Union made a dramatic shift towards Nazi Germany. Almost a year after Britain and France had concluded the
Munich Agreement with Germany, the Soviet Union made agreements with Germany as well, both militarily and economically during
extensive talks. Unlike the case of Britain and France, the Soviet Union's agreement with Germany, the
Molotov–Ribbentrop Pact (signed on 23 August 1939), included a secret protocol that paved the way for the Soviet invasion of Eastern European states and
occupation of their territories. The pact made possible the Soviet occupation of
Lithuania, Latvia, Estonia,
Bessarabia, northern Bukovina, and
eastern Poland. In the far east, the Soviet military won several decisive victories during
border clashes with the
Empire of Japan in 1938 and 1939. However, in April 1941, the USSR signed the
Soviet–Japanese Neutrality Pact with Japan, which the Soviets would unilaterally break in 1945, recognizing the territorial integrity of
Manchukuo, a Japanese
puppet state. The pact ensured Japan would not enter the World War II against the USSR on the side of Germany later.
World War II , considered by many historians as a decisive turning point of World War II On 1 September, Germany
invaded Poland and on the 17th the Soviet Union invaded Poland as well. On 6 October, Poland fell and part of the Soviet occupation zone was then handed over to Germany. On 10 October, the Soviet Union and Lithuania signed an agreement whereby the Soviet Union transferred Polish sovereignty over the Vilna region to Lithuania, and on 28 October the boundary between the Soviet occupation zone and the new territory of Lithuania was officially demarcated. On 1 November, the Soviet Union
annexed Western Ukraine, followed by Western Belarus on the 2nd. In late November, unable to coerce the
Republic of Finland by diplomatic means into moving its border back from
Leningrad, Stalin ordered the
invasion of Finland. On 14 December 1939, the Soviet Union was expelled from the
League of Nations for invading Finland. Germany broke the Molotov–Ribbentrop Pact and
invaded the Soviet Union on 22 June 1941 starting what is known in Russia and some other post-Soviet states as the
Great Patriotic War. The
Red Army stopped the seemingly invincible German Army at the
Battle of Moscow. The
Battle of Stalingrad, which lasted from late 1942 to early 1943, dealt a severe blow to Germany from which they never fully recovered and became a turning point in the war. After Stalingrad, Soviet forces drove through Eastern Europe to Berlin before
Germany surrendered in 1945. The German Army suffered 80% of its military deaths in the Eastern Front.
Harry Hopkins, a close foreign policy advisor to Franklin D. Roosevelt, spoke on 10 August 1943 of the USSR's decisive role in the war, saying that "While in Sicily the forces of Great Britain and the United States are being opposed by 2 German divisions, the Russian front is receiving attention of approximately 200 German divisions." Up to 34 million soldiers served in the Red Army during World War II, 8 million of which were
non-Slavic minorities. , mostly from starvation. , US President
Franklin D. Roosevelt and British Prime Minister
Winston Churchill confer in Tehran, 1943 The USSR suffered greatly in the war,
losing around 20 million people (modern Russian sources put the number at 26.6 million). This includes 8.7 million military deaths. The majority of the losses were ethnic
Russians, followed by ethnic
Ukrainians. More than 2 million people were killed in
Belarus during the three years of
German occupation, almost a quarter of the region's population, including around 550,000 Jews in the
Holocaust in Belarus. During the war, the country together with the United States, the United Kingdom and China were considered the
Big Four Allied powers, and later became the
Four Policemen that formed the basis of the
United Nations Security Council. It emerged as a superpower in the post-war period. Once denied
diplomatic recognition by the Western world, the USSR had official relations with practically every country by the late 1940s. A member of the United Nations at its foundation in 1945, the country
became one of the
five permanent members of the
United Nations Security Council, which gave it the right to veto any of its resolutions. The USSR, in fulfillment of its agreement with the Allies at the
Yalta Conference, broke the Soviet–Japanese Neutrality Pact in April 1945 which Japan had been honoring despite their alliance with Germany, and
invaded Manchukuo and other Japan-controlled territories on 9 August 1945.
This conflict ended with a decisive Soviet victory, contributing to the unconditional
surrender of Japan and the end of World War II. Soviet soldiers committed mass rapes in occupied territories, especially in
Germany. The
wartime rapes were followed by decades of silence. According to historian
Antony Beevor, whose books were banned in 2015 from some Russian schools and colleges,
NKVD (Soviet secret police) files have revealed that the leadership knew what was happening, but did little to stop it. It was often
rear echelon units who committed the rapes. According to professor Oleg Rzheshevsky, "4,148 Red Army officers and many privates were punished for committing atrocities". The exact number of German women and girls raped by Soviet troops during the war and occupation is uncertain, but historians estimate their numbers are likely in the hundreds of thousands, and possibly as many as two million. The Soviet Union was greatly assisted in its wartime effort by the United States via
Lend-Lease. In total, the U.S. deliveries to the USSR through Lend-Lease amounted to $11
billion in materials: over 400,000
jeeps and trucks; 12,000
armored vehicles (including 7,000 tanks, about 1,386 of which were
M3 Lees and 4,102
M4 Shermans); 11,400 aircraft (of which 4,719 were
Bell P-39 Airacobras, 3,414 were
Douglas A-20 Havocs and 2,397 were
Bell P-63 Kingcobras) and 1.75 million tons of food. As Soviet soldiers were bearing the brunt of the war, Roosevelt's advisor
Harry Hopkins felt that American aid to the Soviets would hasten the war's conclusion. Roughly 17.5 million tons of military equipment, vehicles, industrial supplies, and food were shipped from the Western Hemisphere to the USSR, 94% coming from the US. For comparison, a total of 22 million tons landed in Europe to supply American forces from January 1942 to May 1945. It has been estimated that American deliveries to the USSR through the Persian Corridor alone were sufficient, by US Army standards, to maintain sixty combat divisions in the line.
Cold War of 1959 but before the official
Sino-Soviet split of 1961 (total area: c. 35,000,000 km2) During the immediate post-war period, the Soviet Union rebuilt and expanded its economy, while maintaining its
strictly centralized control. It took effective control over most of the countries of Eastern Europe (except
Yugoslavia and later
Albania), turning them into
satellite states. The USSR bound its satellite states in a military alliance, the
Warsaw Pact, in 1955, and an economic organization, Council for Mutual Economic Assistance or
Comecon, a counterpart to the
European Economic Community (EEC), from 1949 to 1991. Although nominally a "defensive" alliance, the Warsaw Pact's primary function was to safeguard the
Soviet Union's hegemony over its
Eastern European satellites, with the Pact's only direct military actions having been the invasions of its own member states to keep them from breaking away. The USSR concentrated on its own recovery, seizing and transferring most of Germany's industrial plants, and it exacted
war reparations from
East Germany,
Hungary,
Romania, and
Bulgaria using Soviet-dominated joint enterprises. It also instituted trading arrangements deliberately designed to favour the country. Moscow controlled the Communist parties that ruled the satellite states, and they followed orders from the Kremlin. Historian Mark Kramer concludes: Later, the Comecon supplied aid to the eventually victorious
Chinese Communist Party, and its influence grew elsewhere in the world. Fearing its ambitions, the Soviet Union's wartime allies, the United Kingdom and the United States, became its enemies. In the ensuing Cold War, the two sides clashed indirectly in
proxy wars. == Khrushchev Thaw (1953–1964) ==