More than two years after the Sri Lankan army defeated the separatist Tamil Tigers there is evidence to suggest both sides committed serious war crimes.
Last month graphic video footage screened on British television added to the international pressure for an independent investigation.
Stephen Sackur spoke to Rajiva Wijesinha, an advisor to the president of Sri Lanka, and asked him what steps the government is taking to investigate war crimes allegations.
Watch the full interview on BBC World News on Tuesday 5 July 2011 at 0330, 0830, 1530 and 2030 GMT and on BBC News Channel on Tuesday 5 July at 0430 and on Wednesday 6 July at 0030 BST.
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