Version of the long-awaited report by the United Nations Secretary General (UNSG) panel reveals "credible allegations" of war crimes which - if proven - suggest a "grave assault on the entire regime of international law".
Despite the UN Panel's tough words, will anyone be held to account?
The report estimates that tens of thousands of civilians were killed in the final four months of Sri Lanka's civil war in 2009.
It indicates that actions by both the Sri Lankan government and the Liberation Tigers of Tamil Eelam (LTTE) could amount to war crimes and crimes against humanity:
'Crimes against humanity'