 On 19 August, the 1939 German–Soviet Commercial Agreement was finally signed.On 21 August, the Soviets suspended the tripartite military talks, citing other reasons.The same day, Stalin received assurance that Germany would approve secret protocols to the proposed non-aggression pact that would place half of Poland (east of the Vistula River), Latvia, Estonia, Finland and Bessarabia in the Soviets' sphere of influence.