Pulitzer Prize-winning biographer Jon Meacham on the evolution of Abraham Lincoln's moral principles and political leadership -- and what the era of Lincoln can teach us about the state of our democracy today.
Top U.S. officials are calling for immediate action to end the three-year-old crisis in the Darfur region of Sudan. Diane and her guests talk about why the situation is especially fragile right now, and what can be done to keep the crisis from getting much worse.
- Suliman Baldo Africa program director for the International Crisis Group
- Sarah Martin Advocate for Refugees International
- William O'Neill Consultant to the Brookings-Bern Project on Internal Displacement
- Assistant Secretary Jendayi Frazer Assistant secretary of state for African affairs
- Nicholas Kristof Columnist for the New York Times
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