At the very best you could say that Wernher Von Braun, was a space obsessed German aristocrat, who would sell himself to whoever would feed his obsession with rockets. It could just have easily been the Russians, but the Americans got to him first. There was a mad scramble for German technology at the end of the war, even things like giant presses that could stamp out super strong light weight aircraft parts were unknown to the Allies.
The head of the Russian Space program in the early days of the moon race was Sergei Pavlovich Korolev, his identity was a state secret, but he basically masteminded the Russian rocket program from Sputnik to ICBM, Vostok and so on. He died in 1966, just as the Russian N1 ( The failed Russian alternative to Von Braun's Saturn V ) program was in full swing. Also the Russians were first on the scene at places like Peenemunde. Who knows what German technology they took.
Time we found out the real truth about Von Braun and the other German Scientists.