Germany had invaded the Soviet Union twice during the world wars (officially Russia for the first time). Both have resulted in great loss of territory and millions of lives. I want to make sure that Germany will never again be able to attack its country. The leaders expressed their readiness to support any request for membership from states that remained neutral during the war and met other requirements. The three major felt it was necessary to make it clear that they were reluctant to support the spanish government`s request, which was set up with the support of the axis powers. Roosevelt wanted the USSR to join the Allies in the Pacific War against Japan, which he hoped would end the war sooner and reduce American casualties. What was then called the Crimean Conference took place in the former summer palace of Tsar Nicholas II, on the outskirts of Yalta, which is now a city in independent Ukraine. With the victory over Germany in three months, Churchill and Stalin were more concerned with dividing Europe into zones of political influence than worrying about military considerations. Germany would be divided into four zones of occupation managed by the three great powers and France, and should be deeply demilitarized and its war criminals brought to justice. The Soviets were supposed to administer the European countries they liberated, but they promised to hold free elections. The British and Americans would be involved in the democratic transition in countries such as Italy, Austria and Greece. The Soviet Union presented to the Conference a proposal on the territories related to the mandate, in accordance with what was decided at the Yalta Conference and the Charter of the United Nations.
Yalta was the second of three major war conferences among the Big Three. It was preceded by the Tehran Conference in November 1943, followed by the Potsdam Conference in July 1945, preceded by a conference in Moscow in October 1944, in which President Roosevelt did not participate, during which Churchill and Stalin had spoken about European Western and Soviet spheres of influence.  At that time, the Soviet army had occupied Poland entirely and held much of Eastern Europe with a military power three times greater than allied forces in the West. [Citation required] The declaration of the liberated Europe has little to do to dispel the sphere of influence of the agreements that had been incorporated into ceasefire agreements. Stalin defended a hard line on the Polish issue and pointed out that in three decades, Germany had used the nation twice as a corridor to invade Russia. He stated that the Soviet Union would not return the Polish territory annexed in 1939 and would not comply with the requirements of the Polish government in exile, which is headquartered in London. France, which had been excluded from the conference, opposed the implementation of the Potsdam agreements in its zone of occupation. In particular, the French refused to relocate Germans expelled from the east. Moreover, the French would not have accepted any obligation to comply with the Potsdam agreements in the procedures of the Allied Control Council; In particular, they reserved the right to block proposals to create common policies and institutions throughout Germany and anything that could lead to the final formation of a single German government.  On August 23, 1939 – shortly before the start of World War II (1939-45), the enemies of Nazi Germany and the Soviet Union surprised the world by signing the German-Soviet non-aggression pact, in which the two countries agreed not to take military action against each other to… The problem of Poland`s future was at the centre of the Yalta conference.
The Russian border with Poland would be moved westward to the Curzon Line, a border that had previously been proposed after the First World War.