NARVA, Estonia (AP) — At the Ivangorod-Narva border crossing, the last glimpse of Russia is of a sprawling fortress and the first sight of Estonia is another fortress on the other bank of a slender river. They’re almost comically close: People with strong arms could have a game of catch between the ramparts. But the proximity is deceptive — the psychological distance between Estonia and Russia is immense and only widening. The countries that once were part of the Soviet Union took radically different paths after the USSR’s collapse. Estonia largely fulfilled the wish of its former President Toomas Hendrik...