You won't know for sure until you go there yourself and go and count the amounts of Russians troops in Crimea. But then, if that is the way you think, you won't believe that The Beatles existed, only because you didn't see them yourself.
It looks like we talk about God or that the Earth is round.
Everybody talks about troops but nobody saw them
I mean at least there are no any materials, when you see them and say, yes, it is russians.
Cor, what are independent sources? I just wonder.
In the end, it doesn't matter. If there is no troops then they could be there. And it doesn't matter that you or me think that national borders are inviolable, because our leaders don't think so. And every 5-10 years they make wars.