July 19, 2016
That's a report on deterrence and defence needs of Poland in particular, but also the Baltics.
I haven't read all of it yet, but it appears to be overly focused on Poland, as if Poland itself was a realistic target for invasion and annexation. Such a focus appears to be typical of most reports and articles on NATO Eastern frontier security. For example, I myself mostly wrote about implications for the German army, RAND did a U.S.Army-focused piece.
Inevitably, ever such focused piece can at most be satisfactory to the target audience (RAND satisfying the interests of its client, the U.S. military, for example).