The Mainila incident ends the diplomatic pause
Explosions were reported near the Soviet village of Mainila on 26 November. Moscow announced that Finnish artillery had killed Soviet soldiers and demanded that Finnish forces withdraw from the frontier. The Finnish government replied with its border-observation record and proposed a joint investigation under the existing non-aggression arrangements. Moscow rejected that procedure and renounced the Soviet-Finnish non-aggression pact on 28 November. Soviet diplomatic relations with Finland were broken on 29 November. The Red Army crossed the frontier the following morning, turning the Mainila accusation into the final public justification for…
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