A Nobel peace laureate from the Democratic Republic of Congo has called for the establishment of an international criminal court for his country following 25 years of conflict.
The gynaecologist, Denis Mukwege, described the violence perpetrated by dozens of armed groups in the east of the country as intolerable, with people living in fear and horror.
He said investigators should exhume mass graves and preserve evidence of what he said were likely to be war crimes.
Dr Mukwege has treated hundreds of women who have been raped and sexually mutilated by militiamen.
Aid groups say more than five million people have died as a result of the conflict.
The UN says one million people have been displaced this year alone, and 25,000 human rights abuses recorded.