sentences:  Pressure from the Latvian working peoples forced the Latvian government to accept this offer.A Pact of Mutual Assistance was signed allowing the USSR to station a limited number of Red Army units in Latvia.Economic difficulties, dissatisfaction with the Latvian government policies ""that had sabotaged fulfillment of the Pact and the Latvian government"" and political orientation towards Nazi Germany led to a revolutionary situation culminating in June 1940.