That includes all living American presidents — except George H.W. Bush — as well as 26 members of Congress. President Obama has confirmed he and first lady Michelle will attend Tuesday's memorial service at FNB Stadium in Johannesburg.
Most revolutionary political figures consider compromise a dirty word and a sign of weakness. Yet Mandela consistently preached pragmatism, and many of his defining moments involved acts of flexibility, reconciliation and magnanimity.
The visit is the first test of an interim deal Iran struck with the West in November. International inspectors have not visited Iran's Arak heavy water production plant in more than two years.