The UN and its peacekeeping troops are in the center of a controversy that has resulted in the death of over 8,000 Haitians due to cholera since 2010.

Since 2004, UN peacekeeping troops have been placed in Haiti to aid in the protection of the interim government.  The problem began in 2010 when the troops, many of whom had been previously stationed in Nepal where an active cholera outbreak was going on, were rotated in to Haiti without first being tested for the disease.  The result: this negligent oversight caused a severe cholera outbreak in Haiti.  However, Secretary-General Ban Ki-moon and other UN leadership have failed to take the blame for nor offer any apology for the UN's unfortunate role in this disaster. For more info, check out this Slate article.