What concerns me is a miscalculation by either party that could result in further escalation.

I am however surprised at the speed of Russia's action, which suggest to me that it had to have been premeditated. Those troops must have been on twelve hours notice to move or less, and my recollection is that you don't keep people standing around like that for very long. I'm also not sure that the reactive armor is left in place during training, those tanks look "" dressed", to me, although I was Inf.