“However, Russia could have easily duplicated the feat, but did not for other classified reasons.”
Yeah, their N1 moon rocket blew up in July 1969:
https://www.youtube.com/watch?v=m79UO4HOQmc
Not to be confused with the Nedelin Catastrophe, which occurred in 1960:
http://www.freerepublic.com/perl/post?id=3206055%2C20
None of that had anything to do with Russia not going to the moon. We were aware of all of those problems. We monitored all those events. Their decision came years later.