The Finnish and Baltic invasions began to deteriorate relations between the Soviets and Germany.  Stalin`s invasions were a serious nuisance to Berlin, as the intention to carry them out had not previously been communicated to the Germans, and they raised concerns that Stalin wanted to form an anti-German bloc.  Molotov`s assurances to the Germans only reinforced German mistrust. On 16 June, as the Soviets invaded Lithuania, but before invading Latvia and Estonia, Ribbentrop instructed his collaborators to “present as soon as possible a report on the possibility of observing in the Baltic countries a tendency to seek support from the Empire or if one tried to form a bloc”.  After Japan attacked the United States in December 1941, World War II was truly world-wide with fighting between the Axis and the Allies on almost every continent. For analysis, you`ll find a full-size image. According to other indications, the first sign of a Soviet-German political détente was the discussion between Soviet Ambassador Alexei Merekalov and Ernst von Weizs-cker, Secretary of State at the German Ministry of Foreign Affairs, on 17 April 1939, first, on a possible improvement of relations. A series of perceived German goodwill signals ensued and the replacement of Litvinov with Molotov.    According to Geoffrey Roberts, recently published documents in Soviet diplomatic records show that Western historians were mistaken in assuming that the Merekalov-Weisz-cker meeting of April 1939 was the source of Soviet signals of détente with Nazi Germany.  His view, supported by Derek Watson and Jonathan Haslam, is that it was only late July 1939-August 1939, and that it was more a consequence than a cause of the collapse of the Franco-Anglo-Soviet negotiations on the tripartite alliance. Molotov and Stalin must have realized in August 1939 that an agreement with Germany would avoid an immediate war with that country and could meet the territorial ambitions of the Soviet Union in eastern Poland, Estonia, Latvia, Lithuania, Finland and Bessarabia; Considering that an alliance with Great Britain and France did not offer territorial gains and risked a war with Germany, where the USSR was most likely to bear the burden of a German attack.  Before the Molotov-Ribbentrop Pact was proclaimed, western communists denied that such a treaty would be signed.
Herbert Biberman, a future member of the Hollywood Ten, denounced the rumors as “fascist propaganda.” Earl Browder, the leader of the American Communist Party, said earl Browder was just as likely to be elected president of the Chamber of Commerce.  However, Gunther wrote that some knew that “communism and fascism were more closely allied than was usually understood,” and Ernst von Weizs-cker had declared on 16 August to Nevile Henderson that the Soviet Union would “participate in participation in Polish loot.”  In September 1939, the Communist International suspended all anti-Nazi and anti-fascist propaganda and declared that war in Europe was a matter of capitalist states attacking each other for imperialist purposes.  Western communists acted accordingly; Although they had previously supported collective security, they have now denounced Britain and France for going to war.  On 3 October, Friedrich Werner von der Schulenburg, the German ambassador to Moscow, Joachim Ribbentrop, announced that the Soviet government was ready to cede the city of Vilnius and its surroundings.