6 Takeaways From Obama's Rallying Nelson Mandela Speech

Former American president Barack Obama traveled to Johannesburg, South Africa on July 17 to deliver the 16th Nelson Mandela Annual Lecture, the latest in a series of speeches given by luminaries like Bill Gates, Kofi Annan, Wangari Maathai and Bill Clinton. Obama's speech was informed by the teachings of the lecture series' namesake, whom Obama referred to as "Madiba," a sign of respect for Mandela's African heritage and the former president's admiration for Mandela. Obama's speech, with the the...