Imagine a small, democratic nation, perched on top of a diverse and bustling continent. Outside of a few cities, its people are spread out over a vast northern hinterland. Its long, largely unguarded border is shared with one of the world’s military superpowers. And that neighbor has recently articulated a desire to acquire new territory. What might that small country do to protect its independence? In the case of post-World War II Finland, the solution was a delicate balancing act: Helsinki