Ahead of International Women's Day, Mrs. Robinson explores leadership on the global stage and the importance of maintaining hope in the push for human rights and environmental initiatives.

"Archbishop Desmond Tutu has been our moral compass and national conscience," South African President Cyril Ramaphosa said in a eulogy at Tutu's state funeral on Saturday.

South Africans from all corners of retired Archbishop Desmond Tutu's "rainbow nation" filed past his pine casket in Cape Town. The viewing line at St. George's Cathedral stretched for nearly a mile.

The Nobel Peace laureate and archbishop emeritus campaigned against a system he called evil and, after apartheid, helped the nation heal as head of the Truth and Reconciliation Commission.

The archbishop is being remembered around the world for his commitment to equality and justice and his "impish" sense of humor.

Desmond Tutu will be remembered for helping end apartheid. But also for his memorable laugh, an infectious, cackling howl employed in the service of easing tensions in a very tense nation.

Winnie Madikizela-Mandela, a leader in South Africa's anti-apartheid movement and ex-wife of the late Nelson Mandela, died Monday. She was 81. On Second...