So this is basically them throwing a tantrum because Trump won the elections. I'm sure the Russians know that but what worries me is how effective these missiles are - if they are effective and can cause damage deep inside Russia, then I fully expect a robust Russian response... perhaps hitting military sites in other countries in Eastern Europe.
If the missiles are ineffective then nothing significant will happen.
In any case, I think something crazy will happen to try and disrupt the Trump inauguration and presidency.