blue helmet
n.— «Video footage seen by The Independent shows the bodies of many killed in the capital, Port-au-Prince, and contains testimony from witnesses claiming the victims were killed by “blue helmets”—common parlance for UN peacekeepers.» —“Peacekeepers accused after killings in Haiti” by Andrew Buncombe in Washington, D.C. Independen (U.K.) July 29, 2005. (source: Double-Tongued Dictionary)
Further reading
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