“Early retirement” is a strange way to describe a 44-year-old’s acceptance of a new government role, but for Mikk Marran, Estonia’s spymaster, it feels a lot like that. As of next month he will no longer helm Välisluureamet, the Baltic state’s foreign intelligence service, which, long before Vladimir Putin’s faltering invasion of Ukraine, was at the forefront of assessing the threats and capabilities of a resurgent and revanchist Russia.(snip) According to one former high-ranking U.S. intelligence officer, “Estonia punches far above its weight on Russian affairs. The respect for Marran and his service in the U.S. intelligence community is quite...