Quebec Agreement

E59255

The Quebec Agreement was a 1943 wartime accord between the United States and the United Kingdom that formalized their collaboration on nuclear weapons development and set terms for postwar control and use of atomic energy.

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Statements (49)

Predicate Object
instanceOf World War II agreement
international agreement
treaty
aimedTo coordinate Anglo-American atomic bomb development
prevent independent national use of atomic weapons without consultation
alsoKnownAs Quebec Agreement
surface form: Articles of Agreement governing collaboration between the authorities of the USA and UK in the matter of Tube Alloys
category Nuclear weapons policy of the United Kingdom
Nuclear weapons policy of the United States
classifiedAs top secret
concerns atomic energy
military technology collaboration
nuclear weapons development
context Anglo-American relations
surface form: Anglo-American special relationship
countryParty Canada
United Kingdom
United States of America
surface form: United States
createdBody Combined Development Trust
Combined Policy Committee
established Agreement between the Government of the United States of America and the Government of the United Kingdom of Great Britain and Northern Ireland for Cooperation on the Uses of Atomic Energy for Mutual Defence Purposes
surface form: US–UK nuclear weapons collaboration

combined policy for atomic energy control
combined policy for atomic weapons use
hasJurisdictionOver allocation of uranium resources for wartime use
historicalPeriod Allied wartime diplomacy
influenced Agreement between the Government of the United States of America and the Government of the United Kingdom of Great Britain and Northern Ireland for Cooperation on the Uses of Atomic Energy for Mutual Defence Purposes
surface form: US–UK Mutual Defence Agreement

postwar nuclear cooperation policy
inForceUntil 1948
language English
legalStatus secret agreement
primarySignatory President Franklin D. Roosevelt
surface form: Franklin D. Roosevelt

Winston Churchill
programNameMentioned Tube Alloys programme
surface form: Tube Alloys
relatedDocument Hyde Park Aide-Mémoire
Manhattan Project agreements
relatedTo Manhattan Project
restricted disclosure of atomic research to third countries
signedAt Château Frontenac
Quebec City
signedAtConference Quebec Conference
surface form: First Quebec Conference
signedDuring World War II
signedOn 1943-08-19
stipulated no sharing of atomic information with third parties without mutual consent
no use of atomic weapons against each other
no use of atomic weapons against other nations without mutual consent
postwar control of atomic energy to be jointly managed
subjectMatter military alliance
resource control
scientific cooperation
supersededBy US–UK Modus Vivendi of 1948
witnessedBy William Lyon Mackenzie King

Referenced by (11)

Full triples — surface form annotated when it differs from this entity's canonical label.

Quebec Agreement alsoKnownAs Quebec Agreement
this entity surface form: Articles of Agreement governing collaboration between the authorities of the USA and UK in the matter of Tube Alloys
Hyde Park Aide-Mémoire extends Quebec Agreement
Hyde Park Aide-Mémoire followedFrom Quebec Agreement
this entity surface form: Quebec Agreement of 1943
this entity surface form: 1944 US–UK declaration on atomic weapons cooperation
US–UK MDA predecessor Quebec Agreement
Hyde Park Aide-Mémoire reaffirms Quebec Agreement
Tube Alloys programme relatedTo Quebec Agreement
this entity surface form: Quebec Agreement on atomic collaboration
Quebec Conference result Quebec Agreement
this entity surface form: Quebec Agreement on atomic energy
Quebec Conference signedDocument Quebec Agreement
Tube Alloys programme significantEvent Quebec Agreement