annan, his predecessor will be in tansd. iran president hassan rouhani and british prime minister david cameron, joined by gordon browbrown, tony blair and mr major. nicholas sar cosy will join francis hollande. >> can you tell me how much people in south africa will use this as an event to determine how south africa is today? >> i think that will be what today is about. as well as watching on the tv screens at home, i think people will reflect on the way the country changed in the last 20 years. we are about to celebrate 20 years of freedom since the first democratic election. people will be looking back at the early years thinking about nelson mandela's influence no building the country we see today. it will be a time of celebration and reflection for the south africans who have seen their lives change. >> we have seen graca mandela arriving at the stadium as the proceedings carry on. i'm interested in the speakers chosen to give eulogies as to who is allowed to speak and who has been left out. what is your impression of that. >> i'm too aware of the controversies over who is left out. barack obama could be controversial. he mentioned in