Host Carol Castiel and reporter Nabeel Biajo of VOA’s “South Sudan in Focus,” speak with former US Ambassador to South Sudan, Tom Hushek, as the world’s youngest nation commemorates its 10th anniversary. While hopeful that South Sudan can overcome its political, economic, and social challenges after a devastating civil war, Ambassador Hushek warns that it will require enormous political will as well as the help and steadfast commitment of the United States and the African Union