Who started the Cold War

I think that although America may have over reacted to the soviets stuborness in trying to convert european countries to communism, it is the soviets that started the cold war. Its understandable after all of the losses that Russia went through in both World War I and II, that is not enough justification to split up Germany half of it being trapped into a third world country. Families were seperated for generations after the berlin wall was put up and the boundry between eastern and western Germany. Russian claimed that it was stopping germany from the terror of imperialism, but the allies let Germany become independent much before the Soviets let Eastern Germany gain its independence. I think that America was quite clear that it was nuclear weapons, and Russia never revealed whether it did or not. Furthermore, Russia tried to take over a bunch of Nazi war factories after the war was over. This to me at least seems very wrong, these were factories not even in Russia built to kill millions and millions of innocent people. America communicated with the rest of the world, or at least european nations, while Russia became extremely secretive. ONly increasing America's suspicion and paranioa of the Soviets.