This treaty allowed Soviet military bases in Estonia, directly enabling the Soviet annexation of the country in June 1940.
Key Facts
- Signed
- 28 September 1939
- Ratifications exchanged
- 4 October 1939, Tallinn
- League of Nations registration
- 13 October 1939
- Estonian signatory
- Karl Selter, Minister of Foreign Affairs
- Soviet signatory
- Vyacheslav Molotov, Commissar of Foreign Affairs
By the Numbers
Location
Cause → Event → Consequence
Following the Molotov–Ribbentrop Pact of August 1939, the Soviet Union gained a free hand in the Baltic states. Under intense diplomatic and military pressure from Moscow, Estonia was compelled to negotiate an agreement that would grant Soviet forces a permanent presence on Estonian soil.
On 28 September 1939, Estonia and the Soviet Union signed the Mutual Assistance Treaty in Moscow. The pact nominally obliged both parties to respect each other's sovereignty and independence, while in practice allowing the Soviet government to establish military bases on Estonian territory. It was signed by Karl Selter and Vyacheslav Molotov and took effect on 4 October 1939.
The military bases established under the treaty gave the Soviet Union a strategic foothold in Estonia. In June 1940, Soviet forces used these positions to facilitate the full occupation and annexation of Estonia, effectively ending the country's independence until 1991.
Political Outcome
Soviet Union gained the right to establish military bases in Estonia; treaty enabled Soviet annexation of Estonia in June 1940.
Estonia was a sovereign independent republic
Estonia hosted Soviet military bases, leading to full Soviet occupation in 1940