 Soon afterward, German foreign minister Joachim von Ribbentrop traveled to Moscow to negotiate the final stage of a new pact, later known as Molotov–Ribbentrop Pact.In its secret protocol, the Germans and Soviets divided Finland, Estonia, Latvia, Lithuania, Poland and Bessarabia between their spheres of influence.After the German invasion of Poland on 1 September, a second secret protocol of 28 September consigned Lithuania to the Soviet sphere of interest.