Blue Helmet peacekeepers are seen in the Democratic Republic of the Congo in 2016. According to a U.N. report, 56 U.N. peacekeepers died in 2017, the highest number of deaths since 1994.
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A Burundian soldier of the U.N. peacekeeping force MINUSCA contingent uses a metal detector at the entrance of a polling station in Bangui, Central African Republic on Dec. 14, 2015.
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Smoke rises near a Syrian flag hoisted up a flagpole as a result of the fighting between Syrian rebels and the Syrian Army over the control of Quneitra crossing, on Saturday. The area is where dozens of U.N. peacekeepers had been under siege by Nusra Front fighters.
U.N. Secretary-General Ban Ki-moon holds a child at a refugee camp in Juba, South Sudan, on Tuesday. There have been increased calls for a contingent of African troops to be involved in peacekeeping operations.