British prime minister David Cameron has pressed for progress on a range of human rights issues during the Commonwealth summit.
Mr Cameron told the Commonwealth Heads of Government Meeting (Chogm) in Australia that to stay relevant it must work harder to uphold basic values.
The Chogm leaders agreed on Saturday to step up efforts to wipe out polio from the four countries where it is endemic.
And the human rights record of the Sri Lankan government came under scrutiny. It will hold Chogm in two years' time.
When asked about Sri Lanka, Mr Cameron said there had to be a "proper, independent exercise to look into the whole issue of what happened, and whether there were war crimes, and who is responsible".
BBC
