Under the Munich Agreement, the entire territory, mainly German, was to be returned to Czechoslovakia by 10 October. Poland and Hungary occupied other parts of the country and, after a few months, Czechoslovakia ceased to exist and what was left of Slovakia became a German puppet state. An agreement was reached on 29 September and.m on 30 September 1938, Adolf Hitler, Neville Chamberlain, Benito Mussolini and Edouard Daladier signed the Munich Agreement. The agreement was officially put in place by Mussolini, while the Italian plan was almost identical to Godesberg`s proposal: the German army was to complete the occupation of the Sudetenland by 10 October and an international commission should decide the future of other controversial territories. Joseph Stalin was angry at the results of the Munich conference. On May 2, 1935, France and the Soviet Union signed the Franco-Soviet mutual aid treaty aimed at stemming the aggression of Nazi Germany. [56] The Soviets, who had a treaty of mutual military assistance with Czechoslovakia, felt betrayed by France, which also had a treaty of mutual military assistance with Czechoslovakia. [57] However, the British and French generally used the Soviets as a threat to swing over the Germans. Stalin concluded that the West had actively agreed with Hitler to transfer a central European country to the Germans, causing fear that they would do the same in the future with the Soviet Union, which allowed the division of the USSR between Western nations. This conviction led the Soviet Union to steer its foreign policy towards a rapprochement with Germany, which eventually led to the signing of the Molotov-Ribbentrop Pact in 1939. [58] Later in the meeting, a pre-arranged deception was made to influence and pressure Chamberlain: one of Hitler`s accomplices entered the room to inform Hitler of other Germans killed in Czechoslovakia, and Hitler then shouted: „I will avenge each of them. The Czechs must be destroyed. [32] The meeting ended with Hitler`s refusal to make concessions to the demands of the Allies. [32] Later that evening, Hitler was concerned that he had gone too far to put pressure on Chamberlain, and he called Chamberlain`s hotel suite to say that he would only accept the annexation of Sudetenland without plans in other areas, provided that Czechoslovakia began evacuating ethnic Chechens from the majority regions of Germany by 8 p.m.

on September 26. After being pushed by Chamberlain, Hitler agreed to issue the ultimatum for October 1 (the same date on which Operation Green was to begin). [37] Hitler then told Chamberlain that it was a concession he wanted to make to the Prime Minister as a „gift“, out of respect for the fact that Chamberlain was prepared to back down a little from his previous position. [37] Hitler added that after the annexation of the Sudetenland, Germany would no longer have territorial rights over Czechoslovakia and would enter into a collective agreement to guarantee the borders of Germany and Czechoslovakia. [37] On May 20, Hitler presented his generals with a draft plan of attack for Czechoslovakia, code-named Operation Green. [15] He insisted that Czechoslovakia should not be „dismantled“ militarily, without „provocation,“ „particularly favourable opportunity“ or „appropriate political justification.“ [16] On May 28, Hitler convened a meeting of his department heads, ordered the acceleration of submarine construction and advanced the construction of his new battleships Bismarck and Tirpitz in the spring of 1940.