the real reason soviets didnt expose the moon landing hoax

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For me, the number one proof that or let's say assumption that absolutely these ideas that it was faked are not true is that it is known that in the late60s there were quite a number of Soviet spies who had infiltrated various levels of the American government.

And since we were in a space race, if the Americans had been unable to land on the moon and had instead faked it, almost certainly one of those spies would have found out about it. Why would the Soviets sit on that information when it's the greatest propaganda victory of the age? Instead, what happened is America landed on the moon and the Soviets abandoned their moon program would because they were only doing it for propaganda purposes.