I was barely an hour in Tallinn, Estonia, when it became obvious what at least some of the local people think of their near neighbour, a country that formerly twice occupied them. I was having a coffee outside a cafe in the picturesque Town Hall Square, where there were a couple of blackboards outside the cafe next to the one I was sitting at. First I assumed they carried the day’s menu. Then I looked more closely. One was in Estonian, the other in English. Chalked in the English version were these blunt words: “Dear Putin. Let’s speed up to...