Did Adolf Hitler had any choice?

well before world war one Russia and Germany were best of friends you know. hardly traditional enemies. for example they joined the British and Austrians against the Revolutionary french and then napoleon. Stalin and a number of the Communist party members were in refuge in Germany from the tsar. Hitler never liked communism so he was always going to attack the USSR. Hitler also did not care how many Germans died. he showed that all to well in making it clear they would not surrender when things were going bad. Millions of Germans died in the last year of the war that need not have.