The Anglo-Soviet Agreement bound the UK and USSR to mutual military cooperation and barred either from making a separate peace with Nazi Germany.
Key Facts
- Date signed
- 12 July 1941
- Signatories
- United Kingdom and Soviet Union
- Trigger event
- Operation Barbarossa (German invasion of USSR)
- Key commitment
- No separate peace with Nazi Germany
- Duration
- Valid until end of war against Nazi Germany
Location
Cause → Event → Consequence
On 22 June 1941, Nazi Germany launched Operation Barbarossa, a massive invasion of the Soviet Union. This sudden attack transformed the USSR from a neutral bystander into a belligerent urgently seeking allied support, prompting rapid diplomatic outreach between London and Moscow.
On 12 July 1941, the United Kingdom and the Soviet Union signed the Anglo-Soviet Agreement in Moscow. The declaration committed both nations to mutual assistance in the war against Nazi Germany and explicitly prohibited either party from concluding a separate peace with Germany.
The agreement established a formal Allied partnership between two ideologically opposed states united by military necessity. Its core principles — mutual assistance and rejection of a separate peace — mirrored earlier Allied declarations and prefigured the broader Declaration by United Nations signed in January 1942.
Political Outcome
Formal bilateral alliance committing both parties to joint war effort against Nazi Germany and prohibiting a separate peace.
Soviet Union effectively neutral in the Western Allied war effort against Germany
Soviet Union formally allied with the United Kingdom against Nazi Germany