World leaders , celebrities join South Africans at memorial service . ` ` The world thanks you for sharing Nelson Mandela with us , '' Obama says . The presidents of Namibia , India , Cuba and South Africa were also designated speakers , as were Roussef and Chinese Vice President Li Yuanchao . ` Comment: The four-hour memorial took place at Johannesburg 's FNB stadium .
World leaders , celebrities join South Africans at memorial service . ` ` The world thanks you for sharing Nelson Mandela with us , '' Obama says . Comment: The four-hour memorial took place at Johannesburg 's FNB stadium .