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.


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 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 special relationship
countryParty Canada
United Kingdom
United States
createdBody Combined Development Trust
Combined Policy Committee
established 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 US–UK Mutual Defence Agreement
postwar nuclear cooperation policy
inForceUntil 1948
language English
legalStatus secret agreement
primarySignatory Franklin D. Roosevelt
Winston Churchill
programNameMentioned 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 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)
Subject (surface form when different) Predicate
Quebec Agreement ("Articles of Agreement governing collaboration between the authorities of the USA and UK in the matter of Tube Alloys")
alsoKnownAs
Hyde Park Aide-Mémoire
extends
Hyde Park Aide-Mémoire ("Quebec Agreement of 1943")
followedFrom
Hyde Park Aide-Mémoire ("1944 US–UK declaration on atomic weapons cooperation")
hasShortDescription
British Mission to the Manhattan Project
legalBasis
US–UK MDA
predecessor
Hyde Park Aide-Mémoire
reaffirms
Tube Alloys programme ("Quebec Agreement on atomic collaboration")
relatedTo
Quebec Conference ("Quebec Agreement on atomic energy")
result
Quebec Conference
signedDocument
Tube Alloys programme
significantEvent

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