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Molotov and Ribbentrop sign the non-aggression treaty in Moscow

On 23 August 1939 in Moscow, Vyacheslav Molotov and Joachim von Ribbentrop signed a non-aggression treaty between Germany and the USSR. In the causal graph this event sets in motion the driver Territorial Revisionism.

Sources: [1][2]

Read the full account

On 23 August 1939 in Moscow, Vyacheslav Molotov and Joachim von Ribbentrop signed a non-aggression treaty between Germany and the USSR. A secret protocol, later published, assigned spheres in Poland, the Baltic states, Finland and Bessarabia. Stalin hosted the signing.

Context

Anglo-French-Soviet talks had failed. Germany invaded Poland on 1 September; the Red Army entered eastern Poland on 17 September — a later Fact. The 1941 German invasion ended the pact as a security bet.

Shared responsibility with the Politburo, Sovnarkom, NKVD, front commands, and later the State Defence Committee is part of the record. Sharing is not a reason to drop Stalin’s signature or chairmanship, and it is not a reason to treat every local killing as a personal handwriting sample.

Why it matters

Direct contribution, shared with Hitler’s government. High confidence on the text.

A decree does not harvest grain, a pact does not fire a rifle, and a conference protocol does not occupy a city by itself. Implementation, if dated, is a later Fact. Mixed welfare effects are separate paths.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Joseph Stalin

    Person

    Direct responsibility

    responsibility level 0.8 · verified

    Stalin received Ribbentrop and authorized the treaty and secret protocol. Molotov signed; Hitler was the other principal.

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactMolotov and Ribbentrop sign the non-aggression treaty in Moscow
    2. sets in motionDriverTerritorial Revisionism

    impact weight 0.8 · Effect from 23 August 1939 · verified

    The secret protocol partitioned Eastern Europe and licensed subsequent invasions of Poland, the Baltics and Romania’s Bessarabia.

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.USHMM — German-Soviet Pact 23 August 1939United States Holocaust Memorial Museum · High credibility · verified
  2. 2.Avalon Project — German-Soviet Non-Aggression Treaty, 23 August 1939Yale Law School Avalon Project · High credibility · verified
What the sources establish

Avalon publishes the treaty text. USHMM and the Wilson Center publish the secret protocol. The 1989 Soviet commission and later Russian publications confirmed the protocol’s existence.

Where later commissions publish death or deportee estimates, those estimates are attributed to the commission, not invented as a Factrail original count.

Established: the 23 August 1939 treaty and secret protocol. Not established: that the pact was the only available Soviet option, or that it caused the Holocaust, which is a German instrument cluster.

The documentary limit is the same for every Stalin instrument in this dossier. Central files can show that an order was issued; they cannot, by themselves, reconstruct every raion’s implementation. Memoir and literary evidence (Solzhenitsyn, Shalamov, Grossman) is used here only as independent texture, never as the sole causal source. Soviet published statistics of the 1930s are treated as official claims with known incentives to over-report industrial output and under-report famine. Post-1956 party revelations, the 1991–92 archival openings, the 2010 Russian State Duma statement on Katyn, Ukrainian Holodomor statutes, and USHMM/Wilson Center document publications are later independent or successor-state records. They do not cancel the original instrument. Readers who want the welfare path should open the named driver, then the indicator that driver already reaches, rather than treating the portrait as the mechanism.

Post-1956 party revelations, the 1991–92 archival openings, the 2010 Russian State Duma statement on Katyn, Ukrainian Holodomor statutes, and USHMM/Wilson Center document publications are later independent or successor-state records.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorJoseph Stalin
  2. contributed toFactMolotov and Ribbentrop sign the non-aggression treaty in Moscow
  3. sets in motionDriverTerritorial Revisionism

Cite this page

Factrail. (2026). Molotov and Ribbentrop sign the non-aggression treaty in Moscow. Factrail. https://factrail.ai/facts/su-molotov-ribbentrop-pact-1939

https://factrail.ai/facts/su-molotov-ribbentrop-pact-1939

Accessed 15 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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