I think with some issues, there is no convincing.
I used to think that this could all be settled if they went up today, because with technology we'd get live shots quite likely. Or a much higher quality of video. But these could all be faked.
The thing that I find compelling is that the Russians didn't say anything at the time. I mean, this was all part of the Cold War. The Russians were monitoring.
And here is a Russian scientist: