A demilitarized zone, DMZ, usually a buffer zone between two entities that have been at war, is an important conventional measure to protect a ceasefire by keeping the belligerents apart, at least geographically. As such it is a symbol of war rather than of peace, or at best of a cold peace, a peace in the narrow sense of abstaining from violence; negative peace in other words. The two borders of this presumable no man’s land would be heavily guarded, ideally by some third party, a condition not really satisfied in the Korean DMZ case. A zone of peace, ZoP, is something quite different since it is supposed to be an enactment of positive peace. The idea is not to keep parties apart and have them abstain from something, but to bring them together and have them cooperate on something. The smallest ZoP is a person who has come to...