As King Charles III prepares to address Commonwealth countries, Royal commentator Afua Hagan explores whether he will broach the issue of slavery that has long been a source of tension between former colonial powers and their former colonies.

The Commonwealth Heads of Government Meeting (CHOGM) kicks off in Apia as Samoa prepares to host leaders and senior politicians from 56 countries — including three monarchs.

King Charles and Queen Camilla have stepped out in Samoa as their royal tour of Australia and Samoa continues. See photos and catch up on the schedule.