Sub-Saharan Africa

By John M. Yates and Stephanie Hanson

By Terrence Lyons and Bernard Gwertzman

By Laurie Garrett and Toni Johnson

By William H. Luers and Bernard Gwertzman

By Jane Holl Lute and Stephanie Hanson

By Princeton N. Lyman

By Robert McMahon and John Ukec Lueth Ukec

By Jeremy Sherlick and Eben Kaplan

By Frank G. Wisner, Vincent A. Mai and William L. Nash

By Stephanie Hanson, Michael E. Moran and Jeremy Sherlick