Soviet–Japanese Neutrality Pact

E44870

World War II–era treaty bilateral treaty international treaty non-aggression pact

The Soviet–Japanese Neutrality Pact was a 1941 non-aggression treaty between the Soviet Union and Japan that temporarily ensured peace between the two powers during World War II until it was renounced by the USSR in 1945.

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All labels observed (10)

Label	Occurrences
Soviet–Japanese Neutrality Pact canonical	12
Soviet–Japanese Neutrality Pact of 1941	5
Soviet–Japanese Neutrality Pact (1941)	2
Japanese–Soviet Neutrality Pact	1
Japan–Soviet Neutrality Pact of 1941	1
Soviet–Japanese Neutrality Pact (ended)	1
Soviet–Japanese Neutrality Pact termination	1
Soviet–Japanese Neutrality Treaty	1
Soviet–Japanese Non-Aggression Pact	1
日ソ中立条約	1

How this entity was disambiguated

This entity first appeared as the object of triple T349384 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Soviet–Japanese Neutrality Pact
Context triple: [Soviet–Japanese War (1945), precededBy, Soviet–Japanese Neutrality Pact]

A. Molotov–Ribbentrop Pact
The Molotov–Ribbentrop Pact was a 1939 non-aggression treaty between Nazi Germany and the Soviet Union that secretly divided Eastern Europe into spheres of influence, paving the way for the outbreak of World War II.
B. Moscow Peace Treaty
The Moscow Peace Treaty was the 1940 agreement that ended the Winter War between Finland and the Soviet Union, forcing Finland to cede significant territories to the USSR.
C. German–Polish Non-Aggression Pact
The German–Polish Non-Aggression Pact was a 1934 treaty between Nazi Germany and Poland intended to guarantee mutual non-aggression, which was effectively nullified when Germany invaded Poland in 1939.
D. Anti-Comintern Pact
The Anti-Comintern Pact was a 1936 anti-communist alliance initially between Nazi Germany and Imperial Japan that became a key diplomatic foundation for the Axis powers before and during World War II.
E. Treaty of Brest-Litovsk
The Treaty of Brest-Litovsk was a 1918 peace agreement in which Bolshevik Russia exited World War I by ceding vast territories to the Central Powers, profoundly reshaping Eastern Europe and influencing the course of the Russian Civil War.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Soviet–Japanese Neutrality Pact
Target entity description: The Soviet–Japanese Neutrality Pact was a 1941 non-aggression treaty between the Soviet Union and Japan that temporarily ensured peace between the two powers during World War II until it was renounced by the USSR in 1945.

A. Molotov–Ribbentrop Pact
The Molotov–Ribbentrop Pact was a 1939 non-aggression treaty between Nazi Germany and the Soviet Union that secretly divided Eastern Europe into spheres of influence, paving the way for the outbreak of World War II.
B. Moscow Peace Treaty
The Moscow Peace Treaty was the 1940 agreement that ended the Winter War between Finland and the Soviet Union, forcing Finland to cede significant territories to the USSR.
C. German–Polish Non-Aggression Pact
The German–Polish Non-Aggression Pact was a 1934 treaty between Nazi Germany and Poland intended to guarantee mutual non-aggression, which was effectively nullified when Germany invaded Poland in 1939.
D. Anti-Comintern Pact
The Anti-Comintern Pact was a 1936 anti-communist alliance initially between Nazi Germany and Imperial Japan that became a key diplomatic foundation for the Axis powers before and during World War II.
E. Treaty of Brest-Litovsk
The Treaty of Brest-Litovsk was a 1918 peace agreement in which Bolshevik Russia exited World War I by ceding vast territories to the Central Powers, profoundly reshaping Eastern Europe and influencing the course of the Russian Civil War.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	World War II–era treaty ⓘ bilateral treaty ⓘ international treaty ⓘ non-aggression pact ⓘ
allowedPolicy	enabled Japan to focus on its war in China and the Pacific ⓘ enabled the Soviet Union to concentrate on its war with Nazi Germany ⓘ
alsoKnownAs	Soviet–Japanese Neutrality Treaty ⓘ linked to: Soviet–Japanese Neutrality Pact Soviet–Japanese Non-Aggression Pact ⓘ linked to: Soviet–Japanese Neutrality Pact
articleContent	each party pledged to maintain peaceful and friendly relations ⓘ each party pledged to remain neutral if the other was attacked by a third power ⓘ each party pledged to respect the territorial integrity and inviolability of the other ⓘ
conflictContext	Soviet–Japanese border conflicts ⓘ World War II ⓘ
countrySignatory	Japan ⓘ Soviet Union ⓘ
dateDenounced	1945-04-05 ⓘ
dateSigned	1941-04-13 ⓘ
denouncedBy	Soviet Union ⓘ
effectiveEnd	1946-04-25 ⓘ
enteredIntoForce	1941-07-25 ⓘ
historicalSignificance	helped shape strategic decisions of both Axis and Allied powers in Asia ⓘ reduced likelihood of a northern front war for Japan during its expansion in Southeast Asia ⓘ reduced likelihood of a two-front war for the Soviet Union during the German invasion ⓘ
language	Japanese ⓘ Russian ⓘ
legalNature	binding international agreement under international law ⓘ
locationSigned	Moscow ⓘ
precededBy	Soviet–Japanese border conflicts of the late 1930s ⓘ linked to: Soviet–Japanese border conflicts
purpose	to ensure neutrality between the Soviet Union and Japan ⓘ to prevent armed conflict between the Soviet Union and Japan ⓘ
relatedEvent	Battle of Khalkhin Gol ⓘ Soviet declaration of war on Japan in August 1945 ⓘ
renewalClause	automatic renewal for another 5 years unless denounced one year before expiry ⓘ
renunciationContext	denounced by the Soviet Union shortly before its entry into the war against Japan ⓘ
resultedIn	mutual neutrality between the Soviet Union and Japan until 1945 ⓘ temporary stabilization of Soviet–Japanese relations ⓘ
signatory	Empire of Japan ⓘ linked to: Japan Union of Soviet Socialist Republics ⓘ linked to: Soviet Union
signedByPerson	Vyacheslav Molotov ⓘ Yosuke Matsuoka ⓘ
signedForCountry	Vyacheslav Molotov signed for the Soviet Union ⓘ Yosuke Matsuoka signed for Japan ⓘ
statusDuringWWII	remained formally in force until 1946 despite 1945 denunciation ⓘ
subjectOf	historical research on Soviet–Japanese relations ⓘ studies of World War II diplomacy ⓘ
termLength	5 years ⓘ
yearSigned	1941 ⓘ

How these facts were elicited