A BBC report on an issue that appears to have been swept off the agenda:
The United Nations failed in its mandate to protect civilians in the last months of Sri Lanka's bloody civil war, a leaked draft of a highly critical internal UN report says. "Events in Sri Lanka mark a grave failure of the UN," it concludes. The government and Tamil rebels are accused of war crimes in the brutal conflict which ended in May 2009.
Link:http://www.bbc.co.uk/news/world-asia-20308610

Interesting tactic by the Sri Lankan state:
It also points to the Sri Lankan government's "stratagem of intimidation", including "control of visas to sanction staff critical of the state". The result was a UN system dominated by "a culture of trade-offs" - UN staff chose not to speak out against the government in an effort to try to improve humanitarian access.
Certainly not unique.