Soviet–Estonian Mutual Assistance Treaty
28 September 1939
The Soviet–Estonian Mutual Assistance Treaty (Estonian: Eesti Vabariigi ja NSV Liidu vaheline vastastikuse abistamise pakt, Russian: Пакт о взаимопомощи между СССР и Эстонией, romanized: Pakt o vzaimopomoshchi mezhdu SSSR i Estoniyey), also known as the Bases Treaty (Estonian: baaside leping) was a bilateral treaty between the Soviet Union and Estonia, signed in Moscow on 28 September 1939. The treaty obliged both parties to respect each other's sovereignty and independence, and allowed the Soviet government to establish military bases in Estonia.