The Union of Soviet Socialist Republics is founded
Four Soviet republics sign a treaty in Moscow, and a headline calls it a New Year's gift to the world's workers.
Quick facts
- Date
- 30 December 1922
- Founding republics
- Russia, Ukraine, Belarus, Transcaucasia
- Location
- Bolshoi Theatre, Moscow
What happened
Delegates from the Russian, Ukrainian, Byelorussian, and Transcaucasian Soviet republics met in Moscow's Bolshoi Theatre for the first Congress of Soviets of the USSR on 30 December 1922, where they approved the Declaration and Treaty on the Creation of the Union of Soviet Socialist Republics. Joseph Stalin, then Commissar of Nationality Affairs, reported the treaty's terms and asked delegates to approve it "immediately and unanimously as it is usually done by the communists." The treaty established a federal structure with a bicameral Central Executive Committee, kept foreign affairs, the military, and security under exclusively central control, and left commissariats like education and health to the individual republics. The next day, the newspaper Izvestiia ran the headline: "Creation of the Soviet Union is a New Year's Gift to the World Proletariat."
Why it matters
The USSR's founding formalized what had already existed in practice since the civil war, since Moscow-aligned governments controlled Ukraine, Belarus, and the Caucasus well before December 1922, but it created the constitutional and federal framework that would govern the Soviet Union for the next 69 years. The treaty's own final ratification was postponed and never actually completed by the Congress, an irregularity that had no practical effect until the republics invoked the treaty's own withdrawal clause to dissolve the USSR in 1991.
How we know
The Library of Congress's Law Library blog documents the Congress's date, Stalin's role presenting the treaty, and the Izvestiia headline marking the union's creation, citing the contemporary Pravda and Izvestiia coverage of the session.
Sources
- In Custodia Legis, Library of Congress Law Library. Treaty on the Creation of the Soviet Union - Signed, Sealed, and Delivered? · Primary sourceblogs.loc.gov · The domain "blogs.loc.gov" is on our Primary source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- In Custodia Legis, Library of Congress Law Library. Treaty on the Creation of the Soviet Union - Signed, Sealed, and Delivered? · Primary sourceblogs.loc.gov · The domain "blogs.loc.gov" is on our Primary source registry. · Link is live and its text matches the event's key terms (Jul 2026)
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Related timelines
- The Cold War → · This treaty created the superpower at the center of the Cold War.