Field monitors of the Organization for Security and Cooperation in Europe (OSCE) are some of the unsung heroes of Europe’s darkest corners. A reminder of that came on April 23 when Joseph Stone, an American paramedic, died and two other OSCE colleagues were injured when their vehicle hit a land mine in eastern Ukraine. They were near the village of Pryshyb, deep in territory controlled by separatists and their Russian backers.

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