She carried with her the knowledge that the smallest unit of conflict is two parties — but the smallest unit of durable peace is an honest, well-timed third chair at the table.… When the argument began in the governor’s office it was small — two men on opposite sides of a wall of glass, each certain the other would blink first. In the months that followed, it grew teeth: a blockade of goods, a night raid that the newspapers called a “miscalculation,” and then the slow unravel of neighbors’ trust. Everyone who watched said the same thing in different ways: it was just two parties, and two parties were enough to make a war out of a disagreement. Mina watched from the edge of the city. She had spent twenty years as a mediator for a regional NGO, then another decade advising diplomats on what did and didn’t work when an outsider tried to lean into a fight. She knew the mechanical rules: a conflict begins with two parties; a third party can s...