[2] The pact provided the opportunity to be renounced 6 months before expiration or by either Estonia or USSR at any time without notice in the event of an act of aggression by the other party against any third state.
[2] If not renounced the pact was to be prolonged each two years for indetermined period.
[2] The pact was prolonged until 31 December 1945 on 4 April 1934 and was again reaffirmed on 28 September 1939.
[2] However on 14th June 1940 the USSR blockaded Estonia by sea and air and occupied it on 16th.
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