That is pretty obvious, with the silly resumption of strategically useless bomber flights nearly 10 years ago.
> Germany went from "no threat" to ...
You might have a better grasp of the history than me, but it was my impression that by 1933 everybody was keenly aware of how dangerous Germany was getting - with the book burning and Nazi parading. Hopefully Russia has learned not to trust treaty partners that behave so. That is a pretty long lead time, and the only country that I can think of right now that exhibits similar behavior is Turkey. So unless Russia is concerned about a Neo-Ottoman empire invasion, they really don't have an excuse.