The Changing Relationship of the Superpowers During the Cold War The United States and Soviet Union, the single most important rivalry of the twentieth century, started as a partnership. This irony was caused by the fact that the Germans were taking over Europe, which forced them in this relationship. Once Hitler was eliminated and Berlin destroyed, the tensions began rising. These two nations had completely opposite ideologies from the economic system to the political system. The changing relationship has evolved from a forced partnership, a possible world war and now finally a steadying friendship. The entire world was watching as the Cold War went from moments of dtente, to hours at the brink of world war three.The Germans and the Russian had an alliance at the beginning of the war but Hitler turned on the Soviets. This caused the Soviets to join the British and American side and led the advance on Germany from two fronts. The German war machine kept this alliance at bay only for so long before the two nations destroyed Berlin. The Soviets were already keeping control of all that was east of Germany, and this was causing the United States great anxiety due to the fact that communism was spreading. A great sense of relief came to the United States as the Nuclear Age began with the Manhattan Project and the Bombing of Japan. Stalin was now afraid that the United States would one-day force capitalist ideas upon Mother Russia, until the most intriguing aspect of the cold war came along, spies.A great change came when in the early 1950’s the Soviets started testing their own nuclear weapon. The United States could not understand how they had their own nuclear weapon so quickly; the answer today is so simple the plans were stolen. All aspects of life for the United States and the Soviets were to beat each other. Tensions stayed high in the Olympics, the space race, ICBM’s, the Korean and Vietnam wars. The highe...