Since the end of the Second World War, Finland has maintained a policy of neutrality: In order to keep itself safe from Russia, it agreed not to join any military alliances or allow foreign armies on its soil. But Finland is now part of the world’s largest military alliance, NATO, and recently hosted dozens of foreign militaries to carry out live-fire artillery drills right on Russia’s doorstep. What changed? What does being in the alliance mean for the future of Finland, for the future of NATO,